diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
index bdd358665769..78d466733d2f 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
@@ -293,7 +293,7 @@
  *    </tr>
  *    <tr>
  *      <td><p> SetAgentOpsObservability</td>
- *      <td><p> Enables/Disables required GCP services and configures AgentOps observability settings calling the Admin Settings executable node to update the AgentOps Observability feature.</td>
+ *      <td><p> Enables/Disables required GCP services and configures AgentOps observability settings.</td>
  *      <td>
  *      <p>Request object method variants only take one parameter, a request object, which must be constructed before the call.</p>
  *      <ul>
@@ -1982,8 +1982,7 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Enables/Disables required GCP services and configures AgentOps observability settings calling
-   * the Admin Settings executable node to update the AgentOps Observability feature.
+   * Enables/Disables required GCP services and configures AgentOps observability settings.
    *
    * <p>Sample code:
    *
@@ -2026,8 +2025,7 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Enables/Disables required GCP services and configures AgentOps observability settings calling
-   * the Admin Settings executable node to update the AgentOps Observability feature.
+   * Enables/Disables required GCP services and configures AgentOps observability settings.
    *
    * <p>Sample code:
    *
@@ -2070,8 +2068,7 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Enables/Disables required GCP services and configures AgentOps observability settings calling
-   * the Admin Settings executable node to update the AgentOps Observability feature.
+   * Enables/Disables required GCP services and configures AgentOps observability settings.
    *
    * <p>Sample code:
    *
@@ -2105,8 +2102,7 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Enables/Disables required GCP services and configures AgentOps observability settings calling
-   * the Admin Settings executable node to update the AgentOps Observability feature.
+   * Enables/Disables required GCP services and configures AgentOps observability settings.
    *
    * <p>Sample code:
    *
@@ -2142,8 +2138,7 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Enables/Disables required GCP services and configures AgentOps observability settings calling
-   * the Admin Settings executable node to update the AgentOps Observability feature.
+   * Enables/Disables required GCP services and configures AgentOps observability settings.
    *
    * <p>Sample code:
    *
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
index c184bb023b72..cf4f037c5bec 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
@@ -704,10 +704,10 @@ public static class Builder extends StubSettings.Builder<DataAgentServiceStubSet
               .setInitialRetryDelayDuration(Duration.ofMillis(1000L))
               .setRetryDelayMultiplier(1.3)
               .setMaxRetryDelayDuration(Duration.ofMillis(10000L))
-              .setInitialRpcTimeoutDuration(Duration.ofMillis(600000L))
+              .setInitialRpcTimeoutDuration(Duration.ofMillis(1800000L))
               .setRpcTimeoutMultiplier(1.0)
-              .setMaxRpcTimeoutDuration(Duration.ofMillis(600000L))
-              .setTotalTimeoutDuration(Duration.ofMillis(600000L))
+              .setMaxRpcTimeoutDuration(Duration.ofMillis(1800000L))
+              .setTotalTimeoutDuration(Duration.ofMillis(1800000L))
               .build();
       definitions.put("retry_policy_0_params", settings);
       RETRY_PARAM_DEFINITIONS = definitions.build();
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
index bb0e859ab257..a9ba66e8dac2 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
@@ -539,10 +539,10 @@ public static class Builder extends StubSettings.Builder<DataChatServiceStubSett
               .setInitialRetryDelayDuration(Duration.ofMillis(1000L))
               .setRetryDelayMultiplier(1.3)
               .setMaxRetryDelayDuration(Duration.ofMillis(10000L))
-              .setInitialRpcTimeoutDuration(Duration.ofMillis(600000L))
+              .setInitialRpcTimeoutDuration(Duration.ofMillis(1800000L))
               .setRpcTimeoutMultiplier(1.0)
-              .setMaxRpcTimeoutDuration(Duration.ofMillis(600000L))
-              .setTotalTimeoutDuration(Duration.ofMillis(600000L))
+              .setMaxRpcTimeoutDuration(Duration.ofMillis(1800000L))
+              .setTotalTimeoutDuration(Duration.ofMillis(1800000L))
               .build();
       definitions.put("retry_policy_0_params", settings);
       RETRY_PARAM_DEFINITIONS = definitions.build();
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/resources/META-INF/native-image/com.google.cloud.geminidataanalytics.v1/reflect-config.json b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/resources/META-INF/native-image/com.google.cloud.geminidataanalytics.v1/reflect-config.json
index 0ece8a17cf89..77408c978c78 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/resources/META-INF/native-image/com.google.cloud.geminidataanalytics.v1/reflect-config.json
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/resources/META-INF/native-image/com.google.cloud.geminidataanalytics.v1/reflect-config.json
@@ -611,6 +611,24 @@
     "allDeclaredClasses": true,
     "allPublicClasses": true
   },
+  {
+    "name": "com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference",
+    "queryAllDeclaredConstructors": true,
+    "queryAllPublicConstructors": true,
+    "queryAllDeclaredMethods": true,
+    "allPublicMethods": true,
+    "allDeclaredClasses": true,
+    "allPublicClasses": true
+  },
+  {
+    "name": "com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference$Builder",
+    "queryAllDeclaredConstructors": true,
+    "queryAllPublicConstructors": true,
+    "queryAllDeclaredMethods": true,
+    "allPublicMethods": true,
+    "allDeclaredClasses": true,
+    "allPublicClasses": true
+  },
   {
     "name": "com.google.cloud.geminidataanalytics.v1.BigQueryJob",
     "queryAllDeclaredConstructors": true,
@@ -2006,6 +2024,24 @@
     "allDeclaredClasses": true,
     "allPublicClasses": true
   },
+  {
+    "name": "com.google.cloud.geminidataanalytics.v1.SearchScope",
+    "queryAllDeclaredConstructors": true,
+    "queryAllPublicConstructors": true,
+    "queryAllDeclaredMethods": true,
+    "allPublicMethods": true,
+    "allDeclaredClasses": true,
+    "allPublicClasses": true
+  },
+  {
+    "name": "com.google.cloud.geminidataanalytics.v1.SearchScope$Builder",
+    "queryAllDeclaredConstructors": true,
+    "queryAllPublicConstructors": true,
+    "queryAllDeclaredMethods": true,
+    "allPublicMethods": true,
+    "allDeclaredClasses": true,
+    "allPublicClasses": true
+  },
   {
     "name": "com.google.cloud.geminidataanalytics.v1.SetAgentOpsObservabilityMetadata",
     "queryAllDeclaredConstructors": true,
diff --git a/java-geminidataanalytics/grpc-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceGrpc.java b/java-geminidataanalytics/grpc-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceGrpc.java
index f95aafac82f5..73d0da6219bd 100644
--- a/java-geminidataanalytics/grpc-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceGrpc.java
+++ b/java-geminidataanalytics/grpc-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceGrpc.java
@@ -877,8 +877,7 @@ default void setIamPolicy(
      *
      * <pre>
      * Enables/Disables required GCP services and configures AgentOps
-     * observability settings calling the Admin Settings executable node to
-     * update the AgentOps Observability feature.
+     * observability settings.
      * </pre>
      */
     default void setAgentOpsObservability(
@@ -1127,8 +1126,7 @@ public void setIamPolicy(
      *
      * <pre>
      * Enables/Disables required GCP services and configures AgentOps
-     * observability settings calling the Admin Settings executable node to
-     * update the AgentOps Observability feature.
+     * observability settings.
      * </pre>
      */
     public void setAgentOpsObservability(
@@ -1338,8 +1336,7 @@ public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyReque
      *
      * <pre>
      * Enables/Disables required GCP services and configures AgentOps
-     * observability settings calling the Admin Settings executable node to
-     * update the AgentOps Observability feature.
+     * observability settings.
      * </pre>
      */
     public com.google.longrunning.Operation setAgentOpsObservability(
@@ -1532,8 +1529,7 @@ public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyReque
      *
      * <pre>
      * Enables/Disables required GCP services and configures AgentOps
-     * observability settings calling the Admin Settings executable node to
-     * update the AgentOps Observability feature.
+     * observability settings.
      * </pre>
      */
     public com.google.longrunning.Operation setAgentOpsObservability(
@@ -1734,8 +1730,7 @@ protected DataAgentServiceFutureStub build(
      *
      * <pre>
      * Enables/Disables required GCP services and configures AgentOps
-     * observability settings calling the Admin Settings executable node to
-     * update the AgentOps Observability feature.
+     * observability settings.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.longrunning.Operation>
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReference.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReference.java
new file mode 100644
index 000000000000..58726c41701a
--- /dev/null
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReference.java
@@ -0,0 +1,793 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// NO CHECKED-IN PROTOBUF GENCODE
+// source: google/cloud/geminidataanalytics/v1/datasource.proto
+// Protobuf Java Version: 4.33.6
+
+package com.google.cloud.geminidataanalytics.v1;
+
+/**
+ *
+ *
+ * <pre>
+ * Message representing a reference to a single BigQuery dataset.
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.geminidataanalytics.v1.BigQueryDatasetReference}
+ */
+@com.google.protobuf.Generated
+public final class BigQueryDatasetReference extends com.google.protobuf.GeneratedMessage
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)
+    BigQueryDatasetReferenceOrBuilder {
+  private static final long serialVersionUID = 0L;
+
+  static {
+    com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+        /* major= */ 4,
+        /* minor= */ 33,
+        /* patch= */ 6,
+        /* suffix= */ "",
+        "BigQueryDatasetReference");
+  }
+
+  // Use BigQueryDatasetReference.newBuilder() to construct.
+  private BigQueryDatasetReference(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    super(builder);
+  }
+
+  private BigQueryDatasetReference() {
+    projectId_ = "";
+    datasetId_ = "";
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+        .internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+        .internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.class,
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder.class);
+  }
+
+  public static final int PROJECT_ID_FIELD_NUMBER = 1;
+
+  @SuppressWarnings("serial")
+  private volatile java.lang.Object projectId_ = "";
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The project ID that the dataset belongs to.
+   * </pre>
+   *
+   * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The projectId.
+   */
+  @java.lang.Override
+  public java.lang.String getProjectId() {
+    java.lang.Object ref = projectId_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      projectId_ = s;
+      return s;
+    }
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The project ID that the dataset belongs to.
+   * </pre>
+   *
+   * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for projectId.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getProjectIdBytes() {
+    java.lang.Object ref = projectId_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      projectId_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int DATASET_ID_FIELD_NUMBER = 2;
+
+  @SuppressWarnings("serial")
+  private volatile java.lang.Object datasetId_ = "";
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The dataset ID.
+   * </pre>
+   *
+   * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The datasetId.
+   */
+  @java.lang.Override
+  public java.lang.String getDatasetId() {
+    java.lang.Object ref = datasetId_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      datasetId_ = s;
+      return s;
+    }
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The dataset ID.
+   * </pre>
+   *
+   * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for datasetId.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getDatasetIdBytes() {
+    java.lang.Object ref = datasetId_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      datasetId_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(projectId_)) {
+      com.google.protobuf.GeneratedMessage.writeString(output, 1, projectId_);
+    }
+    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(datasetId_)) {
+      com.google.protobuf.GeneratedMessage.writeString(output, 2, datasetId_);
+    }
+    getUnknownFields().writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(projectId_)) {
+      size += com.google.protobuf.GeneratedMessage.computeStringSize(1, projectId_);
+    }
+    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(datasetId_)) {
+      size += com.google.protobuf.GeneratedMessage.computeStringSize(2, datasetId_);
+    }
+    size += getUnknownFields().getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference other =
+        (com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference) obj;
+
+    if (!getProjectId().equals(other.getProjectId())) return false;
+    if (!getDatasetId().equals(other.getDatasetId())) return false;
+    if (!getUnknownFields().equals(other.getUnknownFields())) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + PROJECT_ID_FIELD_NUMBER;
+    hash = (53 * hash) + getProjectId().hashCode();
+    hash = (37 * hash) + DATASET_ID_FIELD_NUMBER;
+    hash = (53 * hash) + getDatasetId().hashCode();
+    hash = (29 * hash) + getUnknownFields().hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Message representing a reference to a single BigQuery dataset.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.geminidataanalytics.v1.BigQueryDatasetReference}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)
+      com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.class,
+              com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder.class);
+    }
+
+    // Construct using com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.newBuilder()
+    private Builder() {}
+
+    private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      super(parent);
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      bitField0_ = 0;
+      projectId_ = "";
+      datasetId_ = "";
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+        getDefaultInstanceForType() {
+      return com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference build() {
+      com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference buildPartial() {
+      com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference result =
+          new com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference(this);
+      if (bitField0_ != 0) {
+        buildPartial0(result);
+      }
+      onBuilt();
+      return result;
+    }
+
+    private void buildPartial0(
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference result) {
+      int from_bitField0_ = bitField0_;
+      if (((from_bitField0_ & 0x00000001) != 0)) {
+        result.projectId_ = projectId_;
+      }
+      if (((from_bitField0_ & 0x00000002) != 0)) {
+        result.datasetId_ = datasetId_;
+      }
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference) {
+        return mergeFrom((com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference other) {
+      if (other
+          == com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.getDefaultInstance())
+        return this;
+      if (!other.getProjectId().isEmpty()) {
+        projectId_ = other.projectId_;
+        bitField0_ |= 0x00000001;
+        onChanged();
+      }
+      if (!other.getDatasetId().isEmpty()) {
+        datasetId_ = other.datasetId_;
+        bitField0_ |= 0x00000002;
+        onChanged();
+      }
+      this.mergeUnknownFields(other.getUnknownFields());
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10:
+              {
+                projectId_ = input.readStringRequireUtf8();
+                bitField0_ |= 0x00000001;
+                break;
+              } // case 10
+            case 18:
+              {
+                datasetId_ = input.readStringRequireUtf8();
+                bitField0_ |= 0x00000002;
+                break;
+              } // case 18
+            default:
+              {
+                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
+                  done = true; // was an endgroup tag
+                }
+                break;
+              } // default:
+          } // switch (tag)
+        } // while (!done)
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.unwrapIOException();
+      } finally {
+        onChanged();
+      } // finally
+      return this;
+    }
+
+    private int bitField0_;
+
+    private java.lang.Object projectId_ = "";
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The project ID that the dataset belongs to.
+     * </pre>
+     *
+     * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The projectId.
+     */
+    public java.lang.String getProjectId() {
+      java.lang.Object ref = projectId_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        projectId_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The project ID that the dataset belongs to.
+     * </pre>
+     *
+     * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The bytes for projectId.
+     */
+    public com.google.protobuf.ByteString getProjectIdBytes() {
+      java.lang.Object ref = projectId_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        projectId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The project ID that the dataset belongs to.
+     * </pre>
+     *
+     * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The projectId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setProjectId(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      projectId_ = value;
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The project ID that the dataset belongs to.
+     * </pre>
+     *
+     * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearProjectId() {
+      projectId_ = getDefaultInstance().getProjectId();
+      bitField0_ = (bitField0_ & ~0x00000001);
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The project ID that the dataset belongs to.
+     * </pre>
+     *
+     * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The bytes for projectId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setProjectIdBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      projectId_ = value;
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object datasetId_ = "";
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The dataset ID.
+     * </pre>
+     *
+     * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The datasetId.
+     */
+    public java.lang.String getDatasetId() {
+      java.lang.Object ref = datasetId_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        datasetId_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The dataset ID.
+     * </pre>
+     *
+     * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The bytes for datasetId.
+     */
+    public com.google.protobuf.ByteString getDatasetIdBytes() {
+      java.lang.Object ref = datasetId_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        datasetId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The dataset ID.
+     * </pre>
+     *
+     * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The datasetId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setDatasetId(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      datasetId_ = value;
+      bitField0_ |= 0x00000002;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The dataset ID.
+     * </pre>
+     *
+     * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearDatasetId() {
+      datasetId_ = getDefaultInstance().getDatasetId();
+      bitField0_ = (bitField0_ & ~0x00000002);
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Required. The dataset ID.
+     * </pre>
+     *
+     * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The bytes for datasetId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setDatasetIdBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      datasetId_ = value;
+      bitField0_ |= 0x00000002;
+      onChanged();
+      return this;
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)
+  private static final com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+      DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference();
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+      getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<BigQueryDatasetReference> PARSER =
+      new com.google.protobuf.AbstractParser<BigQueryDatasetReference>() {
+        @java.lang.Override
+        public BigQueryDatasetReference parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          Builder builder = newBuilder();
+          try {
+            builder.mergeFrom(input, extensionRegistry);
+          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+            throw e.setUnfinishedMessage(builder.buildPartial());
+          } catch (com.google.protobuf.UninitializedMessageException e) {
+            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
+          } catch (java.io.IOException e) {
+            throw new com.google.protobuf.InvalidProtocolBufferException(e)
+                .setUnfinishedMessage(builder.buildPartial());
+          }
+          return builder.buildPartial();
+        }
+      };
+
+  public static com.google.protobuf.Parser<BigQueryDatasetReference> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<BigQueryDatasetReference> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+      getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReferenceOrBuilder.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReferenceOrBuilder.java
new file mode 100644
index 000000000000..4ab3ffb05bf5
--- /dev/null
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryDatasetReferenceOrBuilder.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// NO CHECKED-IN PROTOBUF GENCODE
+// source: google/cloud/geminidataanalytics/v1/datasource.proto
+// Protobuf Java Version: 4.33.6
+
+package com.google.cloud.geminidataanalytics.v1;
+
+@com.google.protobuf.Generated
+public interface BigQueryDatasetReferenceOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.geminidataanalytics.v1.BigQueryDatasetReference)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The project ID that the dataset belongs to.
+   * </pre>
+   *
+   * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The projectId.
+   */
+  java.lang.String getProjectId();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The project ID that the dataset belongs to.
+   * </pre>
+   *
+   * <code>string project_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for projectId.
+   */
+  com.google.protobuf.ByteString getProjectIdBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The dataset ID.
+   * </pre>
+   *
+   * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The datasetId.
+   */
+  java.lang.String getDatasetId();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The dataset ID.
+   * </pre>
+   *
+   * <code>string dataset_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for datasetId.
+   */
+  com.google.protobuf.ByteString getDatasetIdBytes();
+}
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferences.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferences.java
index 013d3d924b9b..040be7439e7b 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferences.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferences.java
@@ -73,6 +73,7 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
             com.google.cloud.geminidataanalytics.v1.BigQueryTableReferences.Builder.class);
   }
 
+  private int bitField0_;
   public static final int TABLE_REFERENCES_FIELD_NUMBER = 1;
 
   @SuppressWarnings("serial")
@@ -275,6 +276,95 @@ public int getPropertyGraphReferencesCount() {
     return propertyGraphReferences_.get(index);
   }
 
+  public static final int SEARCH_SCOPE_FIELD_NUMBER = 3;
+  private com.google.cloud.geminidataanalytics.v1.SearchScope searchScope_;
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return Whether the searchScope field is set.
+   */
+  @java.lang.Override
+  public boolean hasSearchScope() {
+    return ((bitField0_ & 0x00000001) != 0);
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return The searchScope.
+   */
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.SearchScope getSearchScope() {
+    return searchScope_ == null
+        ? com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance()
+        : searchScope_;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder getSearchScopeOrBuilder() {
+    return searchScope_ == null
+        ? com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance()
+        : searchScope_;
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -295,6 +385,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < propertyGraphReferences_.size(); i++) {
       output.writeMessage(2, propertyGraphReferences_.get(i));
     }
+    if (((bitField0_ & 0x00000001) != 0)) {
+      output.writeMessage(3, getSearchScope());
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -312,6 +405,9 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               2, propertyGraphReferences_.get(i));
     }
+    if (((bitField0_ & 0x00000001) != 0)) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getSearchScope());
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -331,6 +427,10 @@ public boolean equals(final java.lang.Object obj) {
     if (!getTableReferencesList().equals(other.getTableReferencesList())) return false;
     if (!getPropertyGraphReferencesList().equals(other.getPropertyGraphReferencesList()))
       return false;
+    if (hasSearchScope() != other.hasSearchScope()) return false;
+    if (hasSearchScope()) {
+      if (!getSearchScope().equals(other.getSearchScope())) return false;
+    }
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -350,6 +450,10 @@ public int hashCode() {
       hash = (37 * hash) + PROPERTY_GRAPH_REFERENCES_FIELD_NUMBER;
       hash = (53 * hash) + getPropertyGraphReferencesList().hashCode();
     }
+    if (hasSearchScope()) {
+      hash = (37 * hash) + SEARCH_SCOPE_FIELD_NUMBER;
+      hash = (53 * hash) + getSearchScope().hashCode();
+    }
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -483,10 +587,21 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
     }
 
     // Construct using com.google.cloud.geminidataanalytics.v1.BigQueryTableReferences.newBuilder()
-    private Builder() {}
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
 
     private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
       super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        internalGetTableReferencesFieldBuilder();
+        internalGetPropertyGraphReferencesFieldBuilder();
+        internalGetSearchScopeFieldBuilder();
+      }
     }
 
     @java.lang.Override
@@ -507,6 +622,11 @@ public Builder clear() {
         propertyGraphReferencesBuilder_.clear();
       }
       bitField0_ = (bitField0_ & ~0x00000002);
+      searchScope_ = null;
+      if (searchScopeBuilder_ != null) {
+        searchScopeBuilder_.dispose();
+        searchScopeBuilder_ = null;
+      }
       return this;
     }
 
@@ -569,6 +689,13 @@ private void buildPartialRepeatedFields(
     private void buildPartial0(
         com.google.cloud.geminidataanalytics.v1.BigQueryTableReferences result) {
       int from_bitField0_ = bitField0_;
+      int to_bitField0_ = 0;
+      if (((from_bitField0_ & 0x00000004) != 0)) {
+        result.searchScope_ =
+            searchScopeBuilder_ == null ? searchScope_ : searchScopeBuilder_.build();
+        to_bitField0_ |= 0x00000001;
+      }
+      result.bitField0_ |= to_bitField0_;
     }
 
     @java.lang.Override
@@ -640,6 +767,9 @@ public Builder mergeFrom(
           }
         }
       }
+      if (other.hasSearchScope()) {
+        mergeSearchScope(other.getSearchScope());
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -695,6 +825,13 @@ public Builder mergeFrom(
                 }
                 break;
               } // case 18
+            case 26:
+              {
+                input.readMessage(
+                    internalGetSearchScopeFieldBuilder().getBuilder(), extensionRegistry);
+                bitField0_ |= 0x00000004;
+                break;
+              } // case 26
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -1643,6 +1780,310 @@ public Builder removePropertyGraphReferences(int index) {
       return propertyGraphReferencesBuilder_;
     }
 
+    private com.google.cloud.geminidataanalytics.v1.SearchScope searchScope_;
+    private com.google.protobuf.SingleFieldBuilder<
+            com.google.cloud.geminidataanalytics.v1.SearchScope,
+            com.google.cloud.geminidataanalytics.v1.SearchScope.Builder,
+            com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder>
+        searchScopeBuilder_;
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return Whether the searchScope field is set.
+     */
+    public boolean hasSearchScope() {
+      return ((bitField0_ & 0x00000004) != 0);
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return The searchScope.
+     */
+    public com.google.cloud.geminidataanalytics.v1.SearchScope getSearchScope() {
+      if (searchScopeBuilder_ == null) {
+        return searchScope_ == null
+            ? com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance()
+            : searchScope_;
+      } else {
+        return searchScopeBuilder_.getMessage();
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setSearchScope(com.google.cloud.geminidataanalytics.v1.SearchScope value) {
+      if (searchScopeBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        searchScope_ = value;
+      } else {
+        searchScopeBuilder_.setMessage(value);
+      }
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setSearchScope(
+        com.google.cloud.geminidataanalytics.v1.SearchScope.Builder builderForValue) {
+      if (searchScopeBuilder_ == null) {
+        searchScope_ = builderForValue.build();
+      } else {
+        searchScopeBuilder_.setMessage(builderForValue.build());
+      }
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder mergeSearchScope(com.google.cloud.geminidataanalytics.v1.SearchScope value) {
+      if (searchScopeBuilder_ == null) {
+        if (((bitField0_ & 0x00000004) != 0)
+            && searchScope_ != null
+            && searchScope_
+                != com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance()) {
+          getSearchScopeBuilder().mergeFrom(value);
+        } else {
+          searchScope_ = value;
+        }
+      } else {
+        searchScopeBuilder_.mergeFrom(value);
+      }
+      if (searchScope_ != null) {
+        bitField0_ |= 0x00000004;
+        onChanged();
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder clearSearchScope() {
+      bitField0_ = (bitField0_ & ~0x00000004);
+      searchScope_ = null;
+      if (searchScopeBuilder_ != null) {
+        searchScopeBuilder_.dispose();
+        searchScopeBuilder_ = null;
+      }
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.SearchScope.Builder getSearchScopeBuilder() {
+      bitField0_ |= 0x00000004;
+      onChanged();
+      return internalGetSearchScopeFieldBuilder().getBuilder();
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder getSearchScopeOrBuilder() {
+      if (searchScopeBuilder_ != null) {
+        return searchScopeBuilder_.getMessageOrBuilder();
+      } else {
+        return searchScope_ == null
+            ? com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance()
+            : searchScope_;
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Search over BigQuery resources to discover most relevant tables
+     * to the query.
+     *
+     * When set, at least one of `include_project_ids` or
+     * `include_dataset_references` must be populated with non-blank identifiers.
+     * Matches from the two fields are unioned (OR-ed).
+     *
+     * Note: `search_scope` is only supported for standalone conversations
+     * (`ChatRequest.inline_context` or
+     * `ClientManagedResourceContext.inline_context`) and is not supported in
+     * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+     * </pre>
+     *
+     * <code>
+     * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilder<
+            com.google.cloud.geminidataanalytics.v1.SearchScope,
+            com.google.cloud.geminidataanalytics.v1.SearchScope.Builder,
+            com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder>
+        internalGetSearchScopeFieldBuilder() {
+      if (searchScopeBuilder_ == null) {
+        searchScopeBuilder_ =
+            new com.google.protobuf.SingleFieldBuilder<
+                com.google.cloud.geminidataanalytics.v1.SearchScope,
+                com.google.cloud.geminidataanalytics.v1.SearchScope.Builder,
+                com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder>(
+                getSearchScope(), getParentForChildren(), isClean());
+        searchScope_ = null;
+      }
+      return searchScopeBuilder_;
+    }
+
     // @@protoc_insertion_point(builder_scope:google.cloud.geminidataanalytics.v1.BigQueryTableReferences)
   }
 
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferencesOrBuilder.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferencesOrBuilder.java
index a64f615b933d..bd14f5777139 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferencesOrBuilder.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/BigQueryTableReferencesOrBuilder.java
@@ -183,4 +183,77 @@ com.google.cloud.geminidataanalytics.v1.BigQueryPropertyGraphReference getProper
    */
   com.google.cloud.geminidataanalytics.v1.BigQueryPropertyGraphReferenceOrBuilder
       getPropertyGraphReferencesOrBuilder(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return Whether the searchScope field is set.
+   */
+  boolean hasSearchScope();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return The searchScope.
+   */
+  com.google.cloud.geminidataanalytics.v1.SearchScope getSearchScope();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Search over BigQuery resources to discover most relevant tables
+   * to the query.
+   *
+   * When set, at least one of `include_project_ids` or
+   * `include_dataset_references` must be populated with non-blank identifiers.
+   * Matches from the two fields are unioned (OR-ed).
+   *
+   * Note: `search_scope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * <code>
+   * .google.cloud.geminidataanalytics.v1.SearchScope search_scope = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder getSearchScopeOrBuilder();
 }
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ChatRequest.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ChatRequest.java
index 498246b75904..39b5ed09b6ca 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ChatRequest.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ChatRequest.java
@@ -87,8 +87,8 @@ public enum ThinkingMode implements com.google.protobuf.ProtocolMessageEnum {
      *
      *
      * <pre>
-     * Unspecified thinking mode, agent will use THINKING mode by default except
-     * for BigQuery user defaulting to FAST mode by default.
+     * The default value. For BigQuery and Looker data sources, the agent uses
+     * FAST. For all other data sources, the agent uses THINKING.
      * </pre>
      *
      * <code>THINKING_MODE_UNSPECIFIED = 0;</code>
@@ -131,8 +131,8 @@ public enum ThinkingMode implements com.google.protobuf.ProtocolMessageEnum {
      *
      *
      * <pre>
-     * Unspecified thinking mode, agent will use THINKING mode by default except
-     * for BigQuery user defaulting to FAST mode by default.
+     * The default value. For BigQuery and Looker data sources, the agent uses
+     * FAST. For all other data sources, the agent uses THINKING.
      * </pre>
      *
      * <code>THINKING_MODE_UNSPECIFIED = 0;</code>
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgent.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgent.java
index 8896b5f38971..09f7c15b3527 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgent.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgent.java
@@ -833,7 +833,10 @@ public com.google.protobuf.ByteString getKmsKeyBytes() {
    * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
    * this without a table has no effect: no table is created for the agent
    * and no rows are written. On an agent whose datasource is not BigQuery,
-   * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+   * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+   * `true` or setting `bigquery_agent_analytics_table` with
+   * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+   * is checked.
    *
    * This setting is independent of the project-level BigQuery Agent Analytics
    * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -872,7 +875,10 @@ public boolean hasBigqueryAgentAnalyticsEnabled() {
    * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
    * this without a table has no effect: no table is created for the agent
    * and no rows are written. On an agent whose datasource is not BigQuery,
-   * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+   * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+   * `true` or setting `bigquery_agent_analytics_table` with
+   * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+   * is checked.
    *
    * This setting is independent of the project-level BigQuery Agent Analytics
    * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -903,17 +909,26 @@ public boolean getBigqueryAgentAnalyticsEnabled() {
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
@@ -945,17 +960,26 @@ public boolean hasBigqueryAgentAnalyticsTable() {
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
@@ -990,17 +1014,26 @@ public boolean hasBigqueryAgentAnalyticsTable() {
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
@@ -3659,7 +3692,10 @@ public Builder setKmsKeyBytes(com.google.protobuf.ByteString value) {
      * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
      * this without a table has no effect: no table is created for the agent
      * and no rows are written. On an agent whose datasource is not BigQuery,
-     * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+     * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+     * `true` or setting `bigquery_agent_analytics_table` with
+     * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+     * is checked.
      *
      * This setting is independent of the project-level BigQuery Agent Analytics
      * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -3698,7 +3734,10 @@ public boolean hasBigqueryAgentAnalyticsEnabled() {
      * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
      * this without a table has no effect: no table is created for the agent
      * and no rows are written. On an agent whose datasource is not BigQuery,
-     * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+     * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+     * `true` or setting `bigquery_agent_analytics_table` with
+     * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+     * is checked.
      *
      * This setting is independent of the project-level BigQuery Agent Analytics
      * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -3737,7 +3776,10 @@ public boolean getBigqueryAgentAnalyticsEnabled() {
      * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
      * this without a table has no effect: no table is created for the agent
      * and no rows are written. On an agent whose datasource is not BigQuery,
-     * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+     * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+     * `true` or setting `bigquery_agent_analytics_table` with
+     * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+     * is checked.
      *
      * This setting is independent of the project-level BigQuery Agent Analytics
      * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -3780,7 +3822,10 @@ public Builder setBigqueryAgentAnalyticsEnabled(boolean value) {
      * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
      * this without a table has no effect: no table is created for the agent
      * and no rows are written. On an agent whose datasource is not BigQuery,
-     * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+     * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+     * `true` or setting `bigquery_agent_analytics_table` with
+     * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+     * is checked.
      *
      * This setting is independent of the project-level BigQuery Agent Analytics
      * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -3817,17 +3862,26 @@ public Builder clearBigqueryAgentAnalyticsEnabled() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -3858,17 +3912,26 @@ public boolean hasBigqueryAgentAnalyticsTable() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -3906,17 +3969,26 @@ public boolean hasBigqueryAgentAnalyticsTable() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -3956,17 +4028,26 @@ public Builder setBigqueryAgentAnalyticsTable(
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -4003,17 +4084,26 @@ public Builder setBigqueryAgentAnalyticsTable(
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -4060,17 +4150,26 @@ public Builder mergeBigqueryAgentAnalyticsTable(
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -4106,17 +4205,26 @@ public Builder clearBigqueryAgentAnalyticsTable() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -4148,17 +4256,26 @@ public Builder clearBigqueryAgentAnalyticsTable() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
@@ -4194,17 +4311,26 @@ public Builder clearBigqueryAgentAnalyticsTable() {
      * `true`. The Preview enrollment described on that field applies here too.
      *
      * The trace table is validated when it is set on `CreateDataAgent`, or when
-     * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+     * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+     * writes a field if the field is in `update_mask` or, when `update_mask` is
+     * omitted, if the field is present in the request, even if its value is
+     * unchanged. An update that only clears this field is not validated. The
      * following are rejected with `INVALID_ARGUMENT`:
      *
      * * The table must belong to the same project as the agent.
      * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
      * supported for Looker, Looker Studio or AlloyDB agents.
      *
-     * These are validated against the agent as sent in the request. An agent
-     * that carries no datasource is not validated, and an agent switched to a
-     * non-BigQuery datasource is not re-validated; in the latter case no trace
-     * rows are written.
+     * On `CreateDataAgent`, the datasource is validated against the agent in
+     * the request. On `UpdateDataAgent`, it is validated against the stored
+     * agent after applying the update whenever the call writes a table to this
+     * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+     * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+     * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+     * datasource is not BigQuery. An agent that carries no datasource is not
+     * validated, and an agent switched to a non-BigQuery datasource by an update
+     * that does neither is not re-validated; in the latter case no trace rows
+     * are written.
      *
      * The destination dataset must already exist and must grant write access to
      * the project's Gemini Data Analytics service agent, whose address is
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentOrBuilder.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentOrBuilder.java
index 07cb12319ae1..6c4f2041711d 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentOrBuilder.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentOrBuilder.java
@@ -508,7 +508,10 @@ java.lang.String getLabelsOrDefault(
    * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
    * this without a table has no effect: no table is created for the agent
    * and no rows are written. On an agent whose datasource is not BigQuery,
-   * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+   * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+   * `true` or setting `bigquery_agent_analytics_table` with
+   * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+   * is checked.
    *
    * This setting is independent of the project-level BigQuery Agent Analytics
    * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -544,7 +547,10 @@ java.lang.String getLabelsOrDefault(
    * `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
    * this without a table has no effect: no table is created for the agent
    * and no rows are written. On an agent whose datasource is not BigQuery,
-   * `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+   * `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+   * `true` or setting `bigquery_agent_analytics_table` with
+   * `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+   * is checked.
    *
    * This setting is independent of the project-level BigQuery Agent Analytics
    * setting configured through `SetAgentOpsObservability`. An agent does not
@@ -568,17 +574,26 @@ java.lang.String getLabelsOrDefault(
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
@@ -607,17 +622,26 @@ java.lang.String getLabelsOrDefault(
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
@@ -646,17 +670,26 @@ java.lang.String getLabelsOrDefault(
    * `true`. The Preview enrollment described on that field applies here too.
    *
    * The trace table is validated when it is set on `CreateDataAgent`, or when
-   * it is included in the `update_mask` of an `UpdateDataAgent` call. The
+   * an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+   * writes a field if the field is in `update_mask` or, when `update_mask` is
+   * omitted, if the field is present in the request, even if its value is
+   * unchanged. An update that only clears this field is not validated. The
    * following are rejected with `INVALID_ARGUMENT`:
    *
    * * The table must belong to the same project as the agent.
    * * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
    * supported for Looker, Looker Studio or AlloyDB agents.
    *
-   * These are validated against the agent as sent in the request. An agent
-   * that carries no datasource is not validated, and an agent switched to a
-   * non-BigQuery datasource is not re-validated; in the latter case no trace
-   * rows are written.
+   * On `CreateDataAgent`, the datasource is validated against the agent in
+   * the request. On `UpdateDataAgent`, it is validated against the stored
+   * agent after applying the update whenever the call writes a table to this
+   * field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+   * an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+   * `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+   * datasource is not BigQuery. An agent that carries no datasource is not
+   * validated, and an agent switched to a non-BigQuery datasource by an update
+   * that does neither is not re-validated; in the latter case no trace rows
+   * are written.
    *
    * The destination dataset must already exist and must grant write access to
    * the project's Gemini Data Analytics service agent, whose address is
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DatasourceProto.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DatasourceProto.java
index bb1bc4d35064..82820cb8d407 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DatasourceProto.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DatasourceProto.java
@@ -52,6 +52,14 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_cloud_geminidataanalytics_v1_BigQueryTableReference_descriptor;
   static final com.google.protobuf.GeneratedMessage.FieldAccessorTable
       internal_static_google_cloud_geminidataanalytics_v1_BigQueryTableReference_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor;
+  static final com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor;
+  static final com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_google_cloud_geminidataanalytics_v1_SearchScope_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReferences_descriptor;
   static final com.google.protobuf.GeneratedMessage.FieldAccessorTable
@@ -111,35 +119,44 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + ".cloud.geminidataanalytics.v1.StudioDatasourceReferencesH\000\022N\n"
           + "\006looker\030\003 \001(\0132<.goo"
           + "gle.cloud.geminidataanalytics.v1.LookerExploreReferencesH\000B\014\n\n"
-          + "references\"\344\001\n"
+          + "references\"\262\002\n"
           + "\027BigQueryTableReferences\022[\n"
           + "\020table_references\030\001"
           + " \003(\0132;.google.cloud.geminidataanalytics.v1.BigQueryTableReferenceB\004\342A\001\001\022l\n"
           + "\031property_graph_references\030\002 \003(\0132C.google.cl"
-          + "oud.geminidataanalytics.v1.BigQueryPropertyGraphReferenceB\004\342A\001\001\"\247\001\n"
+          + "oud.geminidataanalytics.v1.BigQueryPropertyGraphReferenceB\004\342A\001\001\022L\n"
+          + "\014search_scope\030\003"
+          + " \001(\01320.google.cloud.geminidataanalytics.v1.SearchScopeB\004\342A\001\001\"\247\001\n"
           + "\026BigQueryTableReference\022\030\n\n"
           + "project_id\030\001 \001(\tB\004\342A\001\002\022\030\n\n"
           + "dataset_id\030\003 \001(\tB\004\342A\001\002\022\026\n"
           + "\010table_id\030\004 \001(\tB\004\342A\001\002\022A\n"
           + "\006schema\030\006"
-          + " \001(\0132+.google.cloud.geminidataanalytics.v1.SchemaB\004\342A\001\001\"}\n"
+          + " \001(\0132+.google.cloud.geminidataanalytics.v1.SchemaB\004\342A\001\001\"N\n"
+          + "\030BigQueryDatasetReference\022\030\n\n"
+          + "project_id\030\001 \001(\tB\004\342A\001\002\022\030\n\n"
+          + "dataset_id\030\002 \001(\tB\004\342A\001\002\"\231\001\n"
+          + "\013SearchScope\022!\n"
+          + "\023include_project_ids\030\001 \003(\tB\004\342A\001\001\022g\n"
+          + "\032include_dataset_references\030\002 \003(\0132="
+          + ".google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceB\004\342A\001\001\"}\n"
           + "\032StudioDatasourceReferences\022_\n"
-          + "\021studio_references\030\002 \003(\0132>.google.cloud.geminidataanal"
-          + "ytics.v1.StudioDatasourceReferenceB\004\342A\001\001\"8\n"
+          + "\021studio_references\030\002"
+          + " \003(\0132>.google.cloud.geminidataanalytics.v1.StudioDatasourceReferenceB\004\342A\001\001\"8\n"
           + "\031StudioDatasourceReference\022\033\n\r"
           + "datasource_id\030\001 \001(\tB\004\342A\001\002\"x\n"
           + "\027LookerExploreReferences\022]\n"
-          + "\022explore_references\030\001 \003(\0132;.goog"
-          + "le.cloud.geminidataanalytics.v1.LookerExploreReferenceB\004\342A\001\002\"\241\002\n"
+          + "\022explore_references\030\001 \003(\0132;.google.clo"
+          + "ud.geminidataanalytics.v1.LookerExploreReferenceB\004\342A\001\002\"\241\002\n"
           + "\026LookerExploreReference\022\035\n"
           + "\023looker_instance_uri\030\t \001(\tH\000\022f\n"
           + "\034private_looker_instance_info\030\n"
-          + " \001(\0132>.g"
-          + "oogle.cloud.geminidataanalytics.v1.PrivateLookerInstanceInfoH\000\022\032\n"
+          + " \001(\0132>.google."
+          + "cloud.geminidataanalytics.v1.PrivateLookerInstanceInfoH\000\022\032\n"
           + "\014lookml_model\030\004 \001(\tB\004\342A\001\002\022\025\n"
           + "\007explore\030\005 \001(\tB\004\342A\001\002\022A\n"
-          + "\006schema\030\010"
-          + " \001(\0132+.google.cloud.geminidataanalytics.v1.SchemaB\004\342A\001\001B\n\n"
+          + "\006schema\030\010 "
+          + "\001(\0132+.google.cloud.geminidataanalytics.v1.SchemaB\004\342A\001\001B\n\n"
           + "\010instance\"u\n"
           + "\036BigQueryPropertyGraphReference\022\030\n\n"
           + "project_id\030\001 \001(\tB\004\342A\001\002\022\030\n\n"
@@ -149,27 +166,27 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\022looker_instance_id\030\001 \001(\t\022\036\n"
           + "\026service_directory_name\030\002 \001(\t\"\346\003\n\n"
           + "Datasource\022_\n"
-          + "\030bigquery_table_reference\030\001"
-          + " \001(\0132;.google.cloud.geminidataanalytics.v1.BigQueryTableReferenceH\000\022\036\n"
+          + "\030bigquery_table_reference\030\001 "
+          + "\001(\0132;.google.cloud.geminidataanalytics.v1.BigQueryTableReferenceH\000\022\036\n"
           + "\024studio_datasource_id\030\002 \001(\tH\000\022_\n"
-          + "\030looker_explore_reference\030\004 \001(\0132;.google.cloud.gemini"
-          + "dataanalytics.v1.LookerExploreReferenceH\000\022p\n"
-          + "!bigquery_property_graph_reference\030\020"
-          + " \001(\0132C.google.cloud.geminidataanalytics.v1.BigQueryPropertyGraphReferenceH\000\022A\n"
+          + "\030looker_explore_reference\030\004"
+          + " \001(\0132;.google.cloud.geminidataanalytics.v1.LookerExploreReferenceH\000\022p\n"
+          + "!bigquery_property_graph_reference\030\020 \001(\0132C"
+          + ".google.cloud.geminidataanalytics.v1.BigQueryPropertyGraphReferenceH\000\022A\n"
           + "\006schema\030\007"
           + " \001(\0132+.google.cloud.geminidataanalytics.v1.SchemaB\004\342A\001\001\0224\n\r"
           + "struct_schema\030\n"
           + " \001(\0132\027.google.protobuf.StructB\004\342A\001\001B\013\n"
           + "\treference\"\365\001\n"
           + "\006Schema\022@\n"
-          + "\006fields\030\001 \003(\0132*.g"
-          + "oogle.cloud.geminidataanalytics.v1.FieldB\004\342A\001\001\022\031\n"
+          + "\006fields\030\001 \003(\0132*.google."
+          + "cloud.geminidataanalytics.v1.FieldB\004\342A\001\001\022\031\n"
           + "\013description\030\002 \001(\tB\004\342A\001\001\022\026\n"
           + "\010synonyms\030\003 \003(\tB\004\342A\001\001\022\022\n"
           + "\004tags\030\004 \003(\tB\004\342A\001\001\022\032\n"
           + "\014display_name\030\005 \001(\tB\004\342A\001\001\022F\n"
-          + "\007filters\030\006 \003"
-          + "(\0132/.google.cloud.geminidataanalytics.v1.DataFilterB\004\342A\001\001\"\237\002\n"
+          + "\007filters\030\006 \003(\0132/.g"
+          + "oogle.cloud.geminidataanalytics.v1.DataFilterB\004\342A\001\001\"\237\002\n"
           + "\005Field\022\022\n"
           + "\004name\030\001 \001(\tB\004\342A\001\001\022\022\n"
           + "\004type\030\002 \001(\tB\004\342A\001\001\022\031\n"
@@ -178,8 +195,8 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\010synonyms\030\006 \003(\tB\004\342A\001\001\022\022\n"
           + "\004tags\030\007 \003(\tB\004\342A\001\001\022\032\n"
           + "\014display_name\030\010 \001(\tB\004\342A\001\001\022C\n"
-          + "\tsubfields\030\t"
-          + " \003(\0132*.google.cloud.geminidataanalytics.v1.FieldB\004\342A\001\001\022\026\n"
+          + "\tsubfields\030\t \003(\0132"
+          + "*.google.cloud.geminidataanalytics.v1.FieldB\004\342A\001\001\022\026\n"
           + "\010category\030\n"
           + " \001(\tB\004\342A\001\001\022\032\n"
           + "\014value_format\030\013 \001(\tB\004\342A\001\001\"\177\n\n"
@@ -191,11 +208,11 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\016DataFilterType\022 \n"
           + "\034DATA_FILTER_TYPE_UNSPECIFIED\020\000\022\021\n\r"
           + "ALWAYS_FILTER\020\001B\214\002\n"
-          + "\'com.google.cloud.geminidataanalytics.v1B\017Datasou"
-          + "rceProtoP\001ZYcloud.google.com/go/geminidataanalytics/apiv1/geminidataanalyticspb;"
-          + "geminidataanalyticspb\252\002#Google.Cloud.Gem"
-          + "iniDataAnalytics.V1\312\002#Google\\Cloud\\Gemin"
-          + "iDataAnalytics\\V1\352\002&Google::Cloud::GeminiDataAnalytics::V1b\006proto3"
+          + "\'com.google.cloud.geminidataanalytics.v1B\017DatasourcePro"
+          + "toP\001ZYcloud.google.com/go/geminidataanalytics/apiv1/geminidataanalyticspb;gemini"
+          + "dataanalyticspb\252\002#Google.Cloud.GeminiDat"
+          + "aAnalytics.V1\312\002#Google\\Cloud\\GeminiDataA"
+          + "nalytics\\V1\352\002&Google::Cloud::GeminiDataAnalytics::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -218,7 +235,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_BigQueryTableReferences_descriptor,
             new java.lang.String[] {
-              "TableReferences", "PropertyGraphReferences",
+              "TableReferences", "PropertyGraphReferences", "SearchScope",
             });
     internal_static_google_cloud_geminidataanalytics_v1_BigQueryTableReference_descriptor =
         getDescriptor().getMessageType(2);
@@ -228,8 +245,24 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "ProjectId", "DatasetId", "TableId", "Schema",
             });
-    internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReferences_descriptor =
+    internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor =
         getDescriptor().getMessageType(3);
+    internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+            internal_static_google_cloud_geminidataanalytics_v1_BigQueryDatasetReference_descriptor,
+            new java.lang.String[] {
+              "ProjectId", "DatasetId",
+            });
+    internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor =
+        getDescriptor().getMessageType(4);
+    internal_static_google_cloud_geminidataanalytics_v1_SearchScope_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+            internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor,
+            new java.lang.String[] {
+              "IncludeProjectIds", "IncludeDatasetReferences",
+            });
+    internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReferences_descriptor =
+        getDescriptor().getMessageType(5);
     internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReferences_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReferences_descriptor,
@@ -237,7 +270,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "StudioReferences",
             });
     internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReference_descriptor =
-        getDescriptor().getMessageType(4);
+        getDescriptor().getMessageType(6);
     internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReference_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_StudioDatasourceReference_descriptor,
@@ -245,7 +278,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "DatasourceId",
             });
     internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReferences_descriptor =
-        getDescriptor().getMessageType(5);
+        getDescriptor().getMessageType(7);
     internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReferences_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReferences_descriptor,
@@ -253,7 +286,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ExploreReferences",
             });
     internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReference_descriptor =
-        getDescriptor().getMessageType(6);
+        getDescriptor().getMessageType(8);
     internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReference_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_LookerExploreReference_descriptor,
@@ -266,7 +299,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Instance",
             });
     internal_static_google_cloud_geminidataanalytics_v1_BigQueryPropertyGraphReference_descriptor =
-        getDescriptor().getMessageType(7);
+        getDescriptor().getMessageType(9);
     internal_static_google_cloud_geminidataanalytics_v1_BigQueryPropertyGraphReference_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_BigQueryPropertyGraphReference_descriptor,
@@ -274,7 +307,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ProjectId", "DatasetId", "PropertyGraphId",
             });
     internal_static_google_cloud_geminidataanalytics_v1_PrivateLookerInstanceInfo_descriptor =
-        getDescriptor().getMessageType(8);
+        getDescriptor().getMessageType(10);
     internal_static_google_cloud_geminidataanalytics_v1_PrivateLookerInstanceInfo_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_PrivateLookerInstanceInfo_descriptor,
@@ -282,7 +315,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "LookerInstanceId", "ServiceDirectoryName",
             });
     internal_static_google_cloud_geminidataanalytics_v1_Datasource_descriptor =
-        getDescriptor().getMessageType(9);
+        getDescriptor().getMessageType(11);
     internal_static_google_cloud_geminidataanalytics_v1_Datasource_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_Datasource_descriptor,
@@ -296,7 +329,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Reference",
             });
     internal_static_google_cloud_geminidataanalytics_v1_Schema_descriptor =
-        getDescriptor().getMessageType(10);
+        getDescriptor().getMessageType(12);
     internal_static_google_cloud_geminidataanalytics_v1_Schema_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_Schema_descriptor,
@@ -304,7 +337,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Fields", "Description", "Synonyms", "Tags", "DisplayName", "Filters",
             });
     internal_static_google_cloud_geminidataanalytics_v1_Field_descriptor =
-        getDescriptor().getMessageType(11);
+        getDescriptor().getMessageType(13);
     internal_static_google_cloud_geminidataanalytics_v1_Field_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_Field_descriptor,
@@ -321,7 +354,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ValueFormat",
             });
     internal_static_google_cloud_geminidataanalytics_v1_DataFilter_descriptor =
-        getDescriptor().getMessageType(12);
+        getDescriptor().getMessageType(14);
     internal_static_google_cloud_geminidataanalytics_v1_DataFilter_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessage.FieldAccessorTable(
             internal_static_google_cloud_geminidataanalytics_v1_DataFilter_descriptor,
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScope.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScope.java
new file mode 100644
index 000000000000..8062c6a730ef
--- /dev/null
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScope.java
@@ -0,0 +1,1321 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// NO CHECKED-IN PROTOBUF GENCODE
+// source: google/cloud/geminidataanalytics/v1/datasource.proto
+// Protobuf Java Version: 4.33.6
+
+package com.google.cloud.geminidataanalytics.v1;
+
+/**
+ *
+ *
+ * <pre>
+ * Message representing filters to apply to search over BigQuery tables.
+ *
+ * At least one of `include_project_ids` or `include_dataset_references` must be
+ * populated with non-blank identifiers. Tables matching either field are
+ * included, so the two fields are unioned (OR-ed) rather than intersected.
+ *
+ * Note: `SearchScope` is only supported for standalone conversations
+ * (`ChatRequest.inline_context` or
+ * `ClientManagedResourceContext.inline_context`) and is not supported in
+ * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.geminidataanalytics.v1.SearchScope}
+ */
+@com.google.protobuf.Generated
+public final class SearchScope extends com.google.protobuf.GeneratedMessage
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.geminidataanalytics.v1.SearchScope)
+    SearchScopeOrBuilder {
+  private static final long serialVersionUID = 0L;
+
+  static {
+    com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+        /* major= */ 4,
+        /* minor= */ 33,
+        /* patch= */ 6,
+        /* suffix= */ "",
+        "SearchScope");
+  }
+
+  // Use SearchScope.newBuilder() to construct.
+  private SearchScope(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    super(builder);
+  }
+
+  private SearchScope() {
+    includeProjectIds_ = com.google.protobuf.LazyStringArrayList.emptyList();
+    includeDatasetReferences_ = java.util.Collections.emptyList();
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+        .internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+        .internal_static_google_cloud_geminidataanalytics_v1_SearchScope_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.geminidataanalytics.v1.SearchScope.class,
+            com.google.cloud.geminidataanalytics.v1.SearchScope.Builder.class);
+  }
+
+  public static final int INCLUDE_PROJECT_IDS_FIELD_NUMBER = 1;
+
+  @SuppressWarnings("serial")
+  private com.google.protobuf.LazyStringArrayList includeProjectIds_ =
+      com.google.protobuf.LazyStringArrayList.emptyList();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return A list containing the includeProjectIds.
+   */
+  public com.google.protobuf.ProtocolStringList getIncludeProjectIdsList() {
+    return includeProjectIds_;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The count of includeProjectIds.
+   */
+  public int getIncludeProjectIdsCount() {
+    return includeProjectIds_.size();
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @param index The index of the element to return.
+   * @return The includeProjectIds at the given index.
+   */
+  public java.lang.String getIncludeProjectIds(int index) {
+    return includeProjectIds_.get(index);
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the includeProjectIds at the given index.
+   */
+  public com.google.protobuf.ByteString getIncludeProjectIdsBytes(int index) {
+    return includeProjectIds_.getByteString(index);
+  }
+
+  public static final int INCLUDE_DATASET_REFERENCES_FIELD_NUMBER = 2;
+
+  @SuppressWarnings("serial")
+  private java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+      includeDatasetReferences_;
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+      getIncludeDatasetReferencesList() {
+    return includeDatasetReferences_;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<
+          ? extends com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>
+      getIncludeDatasetReferencesOrBuilderList() {
+    return includeDatasetReferences_;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public int getIncludeDatasetReferencesCount() {
+    return includeDatasetReferences_.size();
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+      getIncludeDatasetReferences(int index) {
+    return includeDatasetReferences_.get(index);
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder
+      getIncludeDatasetReferencesOrBuilder(int index) {
+    return includeDatasetReferences_.get(index);
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    for (int i = 0; i < includeProjectIds_.size(); i++) {
+      com.google.protobuf.GeneratedMessage.writeString(output, 1, includeProjectIds_.getRaw(i));
+    }
+    for (int i = 0; i < includeDatasetReferences_.size(); i++) {
+      output.writeMessage(2, includeDatasetReferences_.get(i));
+    }
+    getUnknownFields().writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    {
+      int dataSize = 0;
+      for (int i = 0; i < includeProjectIds_.size(); i++) {
+        dataSize += computeStringSizeNoTag(includeProjectIds_.getRaw(i));
+      }
+      size += dataSize;
+      size += 1 * getIncludeProjectIdsList().size();
+    }
+    for (int i = 0; i < includeDatasetReferences_.size(); i++) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              2, includeDatasetReferences_.get(i));
+    }
+    size += getUnknownFields().getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.geminidataanalytics.v1.SearchScope)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.geminidataanalytics.v1.SearchScope other =
+        (com.google.cloud.geminidataanalytics.v1.SearchScope) obj;
+
+    if (!getIncludeProjectIdsList().equals(other.getIncludeProjectIdsList())) return false;
+    if (!getIncludeDatasetReferencesList().equals(other.getIncludeDatasetReferencesList()))
+      return false;
+    if (!getUnknownFields().equals(other.getUnknownFields())) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    if (getIncludeProjectIdsCount() > 0) {
+      hash = (37 * hash) + INCLUDE_PROJECT_IDS_FIELD_NUMBER;
+      hash = (53 * hash) + getIncludeProjectIdsList().hashCode();
+    }
+    if (getIncludeDatasetReferencesCount() > 0) {
+      hash = (37 * hash) + INCLUDE_DATASET_REFERENCES_FIELD_NUMBER;
+      hash = (53 * hash) + getIncludeDatasetReferencesList().hashCode();
+    }
+    hash = (29 * hash) + getUnknownFields().hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessage.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.cloud.geminidataanalytics.v1.SearchScope prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Message representing filters to apply to search over BigQuery tables.
+   *
+   * At least one of `include_project_ids` or `include_dataset_references` must be
+   * populated with non-blank identifiers. Tables matching either field are
+   * included, so the two fields are unioned (OR-ed) rather than intersected.
+   *
+   * Note: `SearchScope` is only supported for standalone conversations
+   * (`ChatRequest.inline_context` or
+   * `ClientManagedResourceContext.inline_context`) and is not supported in
+   * [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.geminidataanalytics.v1.SearchScope}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.geminidataanalytics.v1.SearchScope)
+      com.google.cloud.geminidataanalytics.v1.SearchScopeOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_SearchScope_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.geminidataanalytics.v1.SearchScope.class,
+              com.google.cloud.geminidataanalytics.v1.SearchScope.Builder.class);
+    }
+
+    // Construct using com.google.cloud.geminidataanalytics.v1.SearchScope.newBuilder()
+    private Builder() {}
+
+    private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      super(parent);
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      bitField0_ = 0;
+      includeProjectIds_ = com.google.protobuf.LazyStringArrayList.emptyList();
+      if (includeDatasetReferencesBuilder_ == null) {
+        includeDatasetReferences_ = java.util.Collections.emptyList();
+      } else {
+        includeDatasetReferences_ = null;
+        includeDatasetReferencesBuilder_.clear();
+      }
+      bitField0_ = (bitField0_ & ~0x00000002);
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.geminidataanalytics.v1.DatasourceProto
+          .internal_static_google_cloud_geminidataanalytics_v1_SearchScope_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.SearchScope getDefaultInstanceForType() {
+      return com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.SearchScope build() {
+      com.google.cloud.geminidataanalytics.v1.SearchScope result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.geminidataanalytics.v1.SearchScope buildPartial() {
+      com.google.cloud.geminidataanalytics.v1.SearchScope result =
+          new com.google.cloud.geminidataanalytics.v1.SearchScope(this);
+      buildPartialRepeatedFields(result);
+      if (bitField0_ != 0) {
+        buildPartial0(result);
+      }
+      onBuilt();
+      return result;
+    }
+
+    private void buildPartialRepeatedFields(
+        com.google.cloud.geminidataanalytics.v1.SearchScope result) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        if (((bitField0_ & 0x00000002) != 0)) {
+          includeDatasetReferences_ =
+              java.util.Collections.unmodifiableList(includeDatasetReferences_);
+          bitField0_ = (bitField0_ & ~0x00000002);
+        }
+        result.includeDatasetReferences_ = includeDatasetReferences_;
+      } else {
+        result.includeDatasetReferences_ = includeDatasetReferencesBuilder_.build();
+      }
+    }
+
+    private void buildPartial0(com.google.cloud.geminidataanalytics.v1.SearchScope result) {
+      int from_bitField0_ = bitField0_;
+      if (((from_bitField0_ & 0x00000001) != 0)) {
+        includeProjectIds_.makeImmutable();
+        result.includeProjectIds_ = includeProjectIds_;
+      }
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.geminidataanalytics.v1.SearchScope) {
+        return mergeFrom((com.google.cloud.geminidataanalytics.v1.SearchScope) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.cloud.geminidataanalytics.v1.SearchScope other) {
+      if (other == com.google.cloud.geminidataanalytics.v1.SearchScope.getDefaultInstance())
+        return this;
+      if (!other.includeProjectIds_.isEmpty()) {
+        if (includeProjectIds_.isEmpty()) {
+          includeProjectIds_ = other.includeProjectIds_;
+          bitField0_ |= 0x00000001;
+        } else {
+          ensureIncludeProjectIdsIsMutable();
+          includeProjectIds_.addAll(other.includeProjectIds_);
+        }
+        onChanged();
+      }
+      if (includeDatasetReferencesBuilder_ == null) {
+        if (!other.includeDatasetReferences_.isEmpty()) {
+          if (includeDatasetReferences_.isEmpty()) {
+            includeDatasetReferences_ = other.includeDatasetReferences_;
+            bitField0_ = (bitField0_ & ~0x00000002);
+          } else {
+            ensureIncludeDatasetReferencesIsMutable();
+            includeDatasetReferences_.addAll(other.includeDatasetReferences_);
+          }
+          onChanged();
+        }
+      } else {
+        if (!other.includeDatasetReferences_.isEmpty()) {
+          if (includeDatasetReferencesBuilder_.isEmpty()) {
+            includeDatasetReferencesBuilder_.dispose();
+            includeDatasetReferencesBuilder_ = null;
+            includeDatasetReferences_ = other.includeDatasetReferences_;
+            bitField0_ = (bitField0_ & ~0x00000002);
+            includeDatasetReferencesBuilder_ =
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders
+                    ? internalGetIncludeDatasetReferencesFieldBuilder()
+                    : null;
+          } else {
+            includeDatasetReferencesBuilder_.addAllMessages(other.includeDatasetReferences_);
+          }
+        }
+      }
+      this.mergeUnknownFields(other.getUnknownFields());
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10:
+              {
+                java.lang.String s = input.readStringRequireUtf8();
+                ensureIncludeProjectIdsIsMutable();
+                includeProjectIds_.add(s);
+                break;
+              } // case 10
+            case 18:
+              {
+                com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference m =
+                    input.readMessage(
+                        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.parser(),
+                        extensionRegistry);
+                if (includeDatasetReferencesBuilder_ == null) {
+                  ensureIncludeDatasetReferencesIsMutable();
+                  includeDatasetReferences_.add(m);
+                } else {
+                  includeDatasetReferencesBuilder_.addMessage(m);
+                }
+                break;
+              } // case 18
+            default:
+              {
+                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
+                  done = true; // was an endgroup tag
+                }
+                break;
+              } // default:
+          } // switch (tag)
+        } // while (!done)
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.unwrapIOException();
+      } finally {
+        onChanged();
+      } // finally
+      return this;
+    }
+
+    private int bitField0_;
+
+    private com.google.protobuf.LazyStringArrayList includeProjectIds_ =
+        com.google.protobuf.LazyStringArrayList.emptyList();
+
+    private void ensureIncludeProjectIdsIsMutable() {
+      if (!includeProjectIds_.isModifiable()) {
+        includeProjectIds_ = new com.google.protobuf.LazyStringArrayList(includeProjectIds_);
+      }
+      bitField0_ |= 0x00000001;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return A list containing the includeProjectIds.
+     */
+    public com.google.protobuf.ProtocolStringList getIncludeProjectIdsList() {
+      includeProjectIds_.makeImmutable();
+      return includeProjectIds_;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return The count of includeProjectIds.
+     */
+    public int getIncludeProjectIdsCount() {
+      return includeProjectIds_.size();
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param index The index of the element to return.
+     * @return The includeProjectIds at the given index.
+     */
+    public java.lang.String getIncludeProjectIds(int index) {
+      return includeProjectIds_.get(index);
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param index The index of the value to return.
+     * @return The bytes of the includeProjectIds at the given index.
+     */
+    public com.google.protobuf.ByteString getIncludeProjectIdsBytes(int index) {
+      return includeProjectIds_.getByteString(index);
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param index The index to set the value at.
+     * @param value The includeProjectIds to set.
+     * @return This builder for chaining.
+     */
+    public Builder setIncludeProjectIds(int index, java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureIncludeProjectIdsIsMutable();
+      includeProjectIds_.set(index, value);
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param value The includeProjectIds to add.
+     * @return This builder for chaining.
+     */
+    public Builder addIncludeProjectIds(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureIncludeProjectIdsIsMutable();
+      includeProjectIds_.add(value);
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param values The includeProjectIds to add.
+     * @return This builder for chaining.
+     */
+    public Builder addAllIncludeProjectIds(java.lang.Iterable<java.lang.String> values) {
+      ensureIncludeProjectIdsIsMutable();
+      com.google.protobuf.AbstractMessageLite.Builder.addAll(values, includeProjectIds_);
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearIncludeProjectIds() {
+      includeProjectIds_ = com.google.protobuf.LazyStringArrayList.emptyList();
+      bitField0_ = (bitField0_ & ~0x00000001);
+      ;
+      onChanged();
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery project ids to search over.
+     * </pre>
+     *
+     * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param value The bytes of the includeProjectIds to add.
+     * @return This builder for chaining.
+     */
+    public Builder addIncludeProjectIdsBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      ensureIncludeProjectIdsIsMutable();
+      includeProjectIds_.add(value);
+      bitField0_ |= 0x00000001;
+      onChanged();
+      return this;
+    }
+
+    private java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+        includeDatasetReferences_ = java.util.Collections.emptyList();
+
+    private void ensureIncludeDatasetReferencesIsMutable() {
+      if (!((bitField0_ & 0x00000002) != 0)) {
+        includeDatasetReferences_ =
+            new java.util.ArrayList<
+                com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>(
+                includeDatasetReferences_);
+        bitField0_ |= 0x00000002;
+      }
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilder<
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference,
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder,
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>
+        includeDatasetReferencesBuilder_;
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+        getIncludeDatasetReferencesList() {
+      if (includeDatasetReferencesBuilder_ == null) {
+        return java.util.Collections.unmodifiableList(includeDatasetReferences_);
+      } else {
+        return includeDatasetReferencesBuilder_.getMessageList();
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public int getIncludeDatasetReferencesCount() {
+      if (includeDatasetReferencesBuilder_ == null) {
+        return includeDatasetReferences_.size();
+      } else {
+        return includeDatasetReferencesBuilder_.getCount();
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+        getIncludeDatasetReferences(int index) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        return includeDatasetReferences_.get(index);
+      } else {
+        return includeDatasetReferencesBuilder_.getMessage(index);
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setIncludeDatasetReferences(
+        int index, com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference value) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.set(index, value);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.setMessage(index, value);
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setIncludeDatasetReferences(
+        int index,
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder builderForValue) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.set(index, builderForValue.build());
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.setMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder addIncludeDatasetReferences(
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference value) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.add(value);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.addMessage(value);
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder addIncludeDatasetReferences(
+        int index, com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference value) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.add(index, value);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.addMessage(index, value);
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder addIncludeDatasetReferences(
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder builderForValue) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.add(builderForValue.build());
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.addMessage(builderForValue.build());
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder addIncludeDatasetReferences(
+        int index,
+        com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder builderForValue) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.add(index, builderForValue.build());
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.addMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder addAllIncludeDatasetReferences(
+        java.lang.Iterable<
+                ? extends com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+            values) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        ensureIncludeDatasetReferencesIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, includeDatasetReferences_);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.addAllMessages(values);
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder clearIncludeDatasetReferences() {
+      if (includeDatasetReferencesBuilder_ == null) {
+        includeDatasetReferences_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000002);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.clear();
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder removeIncludeDatasetReferences(int index) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        ensureIncludeDatasetReferencesIsMutable();
+        includeDatasetReferences_.remove(index);
+        onChanged();
+      } else {
+        includeDatasetReferencesBuilder_.remove(index);
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder
+        getIncludeDatasetReferencesBuilder(int index) {
+      return internalGetIncludeDatasetReferencesFieldBuilder().getBuilder(index);
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder
+        getIncludeDatasetReferencesOrBuilder(int index) {
+      if (includeDatasetReferencesBuilder_ == null) {
+        return includeDatasetReferences_.get(index);
+      } else {
+        return includeDatasetReferencesBuilder_.getMessageOrBuilder(index);
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public java.util.List<
+            ? extends com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>
+        getIncludeDatasetReferencesOrBuilderList() {
+      if (includeDatasetReferencesBuilder_ != null) {
+        return includeDatasetReferencesBuilder_.getMessageOrBuilderList();
+      } else {
+        return java.util.Collections.unmodifiableList(includeDatasetReferences_);
+      }
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder
+        addIncludeDatasetReferencesBuilder() {
+      return internalGetIncludeDatasetReferencesFieldBuilder()
+          .addBuilder(
+              com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+                  .getDefaultInstance());
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder
+        addIncludeDatasetReferencesBuilder(int index) {
+      return internalGetIncludeDatasetReferencesFieldBuilder()
+          .addBuilder(
+              index,
+              com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference
+                  .getDefaultInstance());
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The BigQuery dataset references to search over.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder>
+        getIncludeDatasetReferencesBuilderList() {
+      return internalGetIncludeDatasetReferencesFieldBuilder().getBuilderList();
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilder<
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference,
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder,
+            com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>
+        internalGetIncludeDatasetReferencesFieldBuilder() {
+      if (includeDatasetReferencesBuilder_ == null) {
+        includeDatasetReferencesBuilder_ =
+            new com.google.protobuf.RepeatedFieldBuilder<
+                com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference,
+                com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference.Builder,
+                com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>(
+                includeDatasetReferences_,
+                ((bitField0_ & 0x00000002) != 0),
+                getParentForChildren(),
+                isClean());
+        includeDatasetReferences_ = null;
+      }
+      return includeDatasetReferencesBuilder_;
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.geminidataanalytics.v1.SearchScope)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.geminidataanalytics.v1.SearchScope)
+  private static final com.google.cloud.geminidataanalytics.v1.SearchScope DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.geminidataanalytics.v1.SearchScope();
+  }
+
+  public static com.google.cloud.geminidataanalytics.v1.SearchScope getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<SearchScope> PARSER =
+      new com.google.protobuf.AbstractParser<SearchScope>() {
+        @java.lang.Override
+        public SearchScope parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          Builder builder = newBuilder();
+          try {
+            builder.mergeFrom(input, extensionRegistry);
+          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+            throw e.setUnfinishedMessage(builder.buildPartial());
+          } catch (com.google.protobuf.UninitializedMessageException e) {
+            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
+          } catch (java.io.IOException e) {
+            throw new com.google.protobuf.InvalidProtocolBufferException(e)
+                .setUnfinishedMessage(builder.buildPartial());
+          }
+          return builder.buildPartial();
+        }
+      };
+
+  public static com.google.protobuf.Parser<SearchScope> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<SearchScope> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.geminidataanalytics.v1.SearchScope getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScopeOrBuilder.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScopeOrBuilder.java
new file mode 100644
index 000000000000..d837f55954f6
--- /dev/null
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/SearchScopeOrBuilder.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// NO CHECKED-IN PROTOBUF GENCODE
+// source: google/cloud/geminidataanalytics/v1/datasource.proto
+// Protobuf Java Version: 4.33.6
+
+package com.google.cloud.geminidataanalytics.v1;
+
+@com.google.protobuf.Generated
+public interface SearchScopeOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.geminidataanalytics.v1.SearchScope)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return A list containing the includeProjectIds.
+   */
+  java.util.List<java.lang.String> getIncludeProjectIdsList();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The count of includeProjectIds.
+   */
+  int getIncludeProjectIdsCount();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @param index The index of the element to return.
+   * @return The includeProjectIds at the given index.
+   */
+  java.lang.String getIncludeProjectIds(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery project ids to search over.
+   * </pre>
+   *
+   * <code>repeated string include_project_ids = 1 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the includeProjectIds at the given index.
+   */
+  com.google.protobuf.ByteString getIncludeProjectIdsBytes(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  java.util.List<com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference>
+      getIncludeDatasetReferencesList();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReference getIncludeDatasetReferences(
+      int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  int getIncludeDatasetReferencesCount();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  java.util.List<
+          ? extends com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder>
+      getIncludeDatasetReferencesOrBuilderList();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The BigQuery dataset references to search over.
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.geminidataanalytics.v1.BigQueryDatasetReference include_dataset_references = 2 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  com.google.cloud.geminidataanalytics.v1.BigQueryDatasetReferenceOrBuilder
+      getIncludeDatasetReferencesOrBuilder(int index);
+}
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent.proto b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent.proto
index a5cc8d5f524a..691a60b34bc9 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent.proto
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent.proto
@@ -128,7 +128,10 @@ message DataAgent {
   // `bigquery_agent_analytics_table` is set. On a BigQuery agent, enabling
   // this without a table has no effect: no table is created for the agent
   // and no rows are written. On an agent whose datasource is not BigQuery,
-  // `CreateDataAgent` rejects either field with `INVALID_ARGUMENT`.
+  // `CreateDataAgent` and `UpdateDataAgent` reject setting this field to
+  // `true` or setting `bigquery_agent_analytics_table` with
+  // `INVALID_ARGUMENT`. See `bigquery_agent_analytics_table` for when this
+  // is checked.
   //
   // This setting is independent of the project-level BigQuery Agent Analytics
   // setting configured through `SetAgentOpsObservability`. An agent does not
@@ -141,17 +144,26 @@ message DataAgent {
   // `true`. The Preview enrollment described on that field applies here too.
   //
   // The trace table is validated when it is set on `CreateDataAgent`, or when
-  // it is included in the `update_mask` of an `UpdateDataAgent` call. The
+  // an `UpdateDataAgent` call writes a table to it. An `UpdateDataAgent` call
+  // writes a field if the field is in `update_mask` or, when `update_mask` is
+  // omitted, if the field is present in the request, even if its value is
+  // unchanged. An update that only clears this field is not validated. The
   // following are rejected with `INVALID_ARGUMENT`:
   //
   // * The table must belong to the same project as the agent.
   // * The agent's datasource must be BigQuery. BigQuery Agent Analytics is not
   //   supported for Looker, Looker Studio or AlloyDB agents.
   //
-  // These are validated against the agent as sent in the request. An agent
-  // that carries no datasource is not validated, and an agent switched to a
-  // non-BigQuery datasource is not re-validated; in the latter case no trace
-  // rows are written.
+  // On `CreateDataAgent`, the datasource is validated against the agent in
+  // the request. On `UpdateDataAgent`, it is validated against the stored
+  // agent after applying the update whenever the call writes a table to this
+  // field or writes `true` to `bigquery_agent_analytics_enabled`. For example,
+  // an `UpdateDataAgent` call without `update_mask` that carries an unchanged
+  // `bigquery_agent_analytics_enabled = true` is rejected on an agent whose
+  // datasource is not BigQuery. An agent that carries no datasource is not
+  // validated, and an agent switched to a non-BigQuery datasource by an update
+  // that does neither is not re-validated; in the latter case no trace rows
+  // are written.
   //
   // The destination dataset must already exist and must grant write access to
   // the project's Gemini Data Analytics service agent, whose address is
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent_service.proto b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent_service.proto
index 30d7a421b9bd..f22beb081387 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent_service.proto
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_agent_service.proto
@@ -158,8 +158,7 @@ service DataAgentService {
   }
 
   // Enables/Disables required GCP services and configures AgentOps
-  // observability settings calling the Admin Settings executable node to
-  // update the AgentOps Observability feature.
+  // observability settings.
   rpc SetAgentOpsObservability(SetAgentOpsObservabilityRequest)
       returns (google.longrunning.Operation) {
     option (google.api.http) = {
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_chat_service.proto b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_chat_service.proto
index 4b10d9fa79f8..673611388b97 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_chat_service.proto
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/data_chat_service.proto
@@ -160,8 +160,8 @@ message StorageMessage {
 message ChatRequest {
   // Mode of thinking for the agent.
   enum ThinkingMode {
-    // Unspecified thinking mode, agent will use THINKING mode by default except
-    // for BigQuery user defaulting to FAST mode by default.
+    // The default value. For BigQuery and Looker data sources, the agent uses
+    // FAST. For all other data sources, the agent uses THINKING.
     THINKING_MODE_UNSPECIFIED = 0;
 
     // Fast mode, answers quickly.
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/datasource.proto b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/datasource.proto
index 67c31f51cee7..e134a22fac84 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/datasource.proto
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/proto/google/cloud/geminidataanalytics/v1/datasource.proto
@@ -68,6 +68,19 @@ message BigQueryTableReferences {
   // refer to the same resource.
   repeated BigQueryPropertyGraphReference property_graph_references = 2
       [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. Search over BigQuery resources to discover most relevant tables
+  // to the query.
+  //
+  // When set, at least one of `include_project_ids` or
+  // `include_dataset_references` must be populated with non-blank identifiers.
+  // Matches from the two fields are unioned (OR-ed).
+  //
+  // Note: `search_scope` is only supported for standalone conversations
+  // (`ChatRequest.inline_context` or
+  // `ClientManagedResourceContext.inline_context`) and is not supported in
+  // [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+  SearchScope search_scope = 3 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Message representing a reference to a single BigQuery table.
@@ -85,6 +98,35 @@ message BigQueryTableReference {
   Schema schema = 6 [(google.api.field_behavior) = OPTIONAL];
 }
 
+// Message representing a reference to a single BigQuery dataset.
+message BigQueryDatasetReference {
+  // Required. The project ID that the dataset belongs to.
+  string project_id = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Required. The dataset ID.
+  string dataset_id = 2 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Message representing filters to apply to search over BigQuery tables.
+//
+// At least one of `include_project_ids` or `include_dataset_references` must be
+// populated with non-blank identifiers. Tables matching either field are
+// included, so the two fields are unioned (OR-ed) rather than intersected.
+//
+// Note: `SearchScope` is only supported for standalone conversations
+// (`ChatRequest.inline_context` or
+// `ClientManagedResourceContext.inline_context`) and is not supported in
+// [DataAgent][google.cloud.geminidataanalytics.v1.DataAgent].
+message SearchScope {
+  // Optional. The BigQuery project ids to search over.
+  repeated string include_project_ids = 1
+      [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. The BigQuery dataset references to search over.
+  repeated BigQueryDatasetReference include_dataset_references = 2
+      [(google.api.field_behavior) = OPTIONAL];
+}
+
 // Message representing references to Looker Studio datasources.
 message StudioDatasourceReferences {
   // Optional. The references to the studio datasources.
diff --git a/librarian.yaml b/librarian.yaml
index e28da4e4ce6f..c6a3c96756b3 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -16,8 +16,8 @@ version: v0.49.0
 repo: googleapis/google-cloud-java
 sources:
   googleapis:
-    commit: 14a161a98ef045be80c12ab69d924504a756f109
-    sha256: ce3cee2da77fbdff0e269bc520dc61e8b32efcdec7628b39b9e474a02bc951f6
+    commit: cec791da64be8ae9fc9d5402515a144e63f673bf
+    sha256: 4a4f6bbd8fc8bfccfaa09290afe7013c5cbd6c894a4d646efbd014ace41f0f90
   showcase:
     commit: 5158967e8a41c751b15776142d190428ddb7e99f
     sha256: a31271ff2cdeb7cce91e93a4d58a66dcaaac574c51cc14bd74577ab1eafd3ccd