diff --git a/interface_sdk/api/@ohos.data.cloudData.d.ts b/interface_sdk/api/@ohos.data.cloudData.d.ts
index 3aff00650cc7940400d35d32cd65a055f37c3ad1..cc985208092da81566b42736026f1ff72f411dfe 100644
--- a/interface_sdk/api/@ohos.data.cloudData.d.ts
+++ b/interface_sdk/api/@ohos.data.cloudData.d.ts
@@ -294,7 +294,7 @@ declare namespace cloudData {
    * @systemapi
    * @since 11
    */
-  export namespace Sharing {
+  export namespace sharing {
     /**
      * Enumerates the roles.
      *
@@ -621,7 +621,7 @@ declare namespace cloudData {
     function share(
       sharingRes: string,
       participants: Array<Participant>,
-      callback: AsyncCallback<Array<Result<Participant>>>
+      callback: AsyncCallback<Result<Array<Result<Participant>>>>
     ): void;
 
     /**
@@ -641,7 +641,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function share(sharingRes: string, participants: Array<Participant>): Promise<Array<Result<Participant>>>;
+    function share(sharingRes: string, participants: Array<Participant>): Promise<Result<Array<Result<Participant>>>>;
 
     /**
      * Unshares data.
@@ -664,7 +664,7 @@ declare namespace cloudData {
     function unshare(
       sharingRes: string,
       participants: Array<Participant>,
-      callback: AsyncCallback<Array<Result<Participant>>>
+      callback: AsyncCallback<Result<Array<Result<Participant>>>>
     ): void;
 
     /**
@@ -684,7 +684,10 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function unshare(sharingRes: string, participants: Array<Participant>): Promise<Array<Result<Participant>>>;
+    function unshare(
+      sharingRes: string,
+      participants: Array<Participant>
+    ): Promise<Result<Array<Result<Participant>>>>;
 
     /**
      * Exit sharing.
@@ -701,7 +704,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function exit(sharingRes: string, callback: AsyncCallback<void>): void;
+    function exit(sharingRes: string, callback: AsyncCallback<Result<void>>): void;
 
     /**
      * Exit sharing.
@@ -718,7 +721,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function exit(sharingRes: string): Promise<void>;
+    function exit(sharingRes: string): Promise<Result<void>>;
 
     /**
      * Changes the permissions for the shared data.
@@ -741,7 +744,7 @@ declare namespace cloudData {
     function changePrivilege(
       sharingRes: string,
       participants: Array<Participant>,
-      callback: AsyncCallback<Array<Result<Participant>>>
+      callback: AsyncCallback<Result<Array<Result<Participant>>>>
     ): void;
 
     /**
@@ -764,7 +767,7 @@ declare namespace cloudData {
     function changePrivilege(
       sharingRes: string,
       participants: Array<Participant>
-    ): Promise<Array<Result<Participant>>>;
+    ): Promise<Result<Array<Result<Participant>>>>;
 
     /**
      * Queries the participants based on the specified shared data.
@@ -782,7 +785,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function queryParticipants(sharingRes: string, callback: AsyncCallback<Array<Result<Participant>>>): void;
+    function queryParticipants(sharingRes: string, callback: AsyncCallback<Result<Array<Participant>>>): void;
 
     /**
      * Queries the participants based on the specified shared data.
@@ -799,12 +802,12 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function queryParticipants(sharingRes: string): Promise<Array<Result<Participant>>>;
+    function queryParticipants(sharingRes: string): Promise<Result<Array<Participant>>>;
 
     /**
      * Queries the participants based on the specified invitation code.
      *
-     * @param { string } InvitationCode - Indicates the invitation code.
+     * @param { string } invitationCode - Indicates the invitation code.
      * @param { AsyncCallback<Array<Result<Participant>>> } callback - Indicates the
      * callback invoked to return the participants obtained.
      * @throws { BusinessError } 201 - Permission verification failed, which
@@ -818,14 +821,14 @@ declare namespace cloudData {
      * @since 11
      */
     function queryParticipantsByInvitation(
-      InvitationCode: string,
-      callback: AsyncCallback<Array<Result<Participant>>>
+      invitationCode: string,
+      callback: AsyncCallback<Result<Array<Participant>>>
     ): void;
 
     /**
      * Queries the participants based on the specified invitation code.
      *
-     * @param { string } InvitationCode - Indicates the invitation code.
+     * @param { string } invitationCode - Indicates the invitation code.
      * @Returns { Promise<Array<Result<Participant>>> } - Promise used to return the result.
      * @throws { BusinessError } 201 - Permission verification failed, which
      * is usually returned by <b>VerifyAccessToken</b>.
@@ -837,7 +840,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function queryParticipantsByInvitation(InvitationCode: string): Promise<Array<Result<Participant>>>;
+    function queryParticipantsByInvitation(invitationCode: string): Promise<Result<Array<Participant>>>;
 
     /**
      * Confirms the invitation of cloud sharing.
@@ -892,7 +895,7 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function changeConfirmation(sharingRes: string, status: Status, callback: AsyncCallback<void>): void;
+    function changeConfirmation(sharingRes: string, status: Status, callback: AsyncCallback<Result<void>>): void;
 
     /**
      * Changes confirmation of shared record.
@@ -910,8 +913,8 @@ declare namespace cloudData {
      * @systemapi
      * @since 11
      */
-    function changeConfirmation(sharingRes: string, status: Status): Promise<void>;
+    function changeConfirmation(sharingRes: string, status: Status): Promise<Result<void>>;
   }
 }
 
-export default cloudData;
+export default cloudData;
\ No newline at end of file
diff --git a/interface_sdk/api/@ohos.data.cloudExtension.d.ts b/interface_sdk/api/@ohos.data.cloudExtension.d.ts
index cca2371c329aa145b6518926d3c2ad6948ae6432..203f6fbf2a60e64299db2c9411a26f877da93525 100644
--- a/interface_sdk/api/@ohos.data.cloudExtension.d.ts
+++ b/interface_sdk/api/@ohos.data.cloudExtension.d.ts
@@ -13,7 +13,8 @@
  * limitations under the License.
  */
 
-import rpc from './@ohos.rpc';
+import type relationalStore from './@ohos.data.relationalStore';
+import type rpc from './@ohos.rpc';
 import cloudData from "./@ohos.data.cloudData";
 import Result = cloudData.Sharing.Result;
 
@@ -25,6 +26,717 @@ import Result = cloudData.Sharing.Result;
  * @since 11
  */
 declare namespace cloudExtension {
+  /**
+   * Defines valuesBucket, see {@link relationalStore.ValuesBucket}.
+   *
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  type ValuesBucket = relationalStore.ValuesBucket;
+
+  /**
+   * Defines cloud information.
+   *
+   * @interface CloudInfo
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface CloudInfo {
+    /**
+     * Cloud information. For details, see {@link ServiceInfo}.
+     *
+     * @type { ServiceInfo }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    cloudInfo: ServiceInfo;
+
+    /**
+     * Defines brief application information.
+     *
+     * @type { object }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    apps: { [bundleName: string]: AppBriefInfo };
+  }
+
+  /**
+   * Defines cloud service information.
+   *
+   * @interface ServiceInfo
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface ServiceInfo {
+    /**
+     * Whether cloud is enabled. The value <b>true</b> means cloud is enabled;
+     * the value <b>false</b> means the opposite.
+     *
+     * @type { boolean }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    enableCloud: boolean;
+
+    /**
+     * ID of the cloud account generated by using SHA-256.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    id: string;
+
+    /**
+     * Total space (in KB) of the account on the server.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    totalSpace: number;
+
+    /**
+     * Available space (in KB) of the account on the server.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    remainingSpace: number;
+
+    /**
+     * Current user of the device.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    user: number;
+  }
+
+  /**
+   * Defines the brief application information.
+   *
+   * @interface AppBriefInfo
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface AppBriefInfo {
+    /**
+     * ID of the application.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    appId: string;
+
+    /**
+     * Bundle name.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    bundleName: string;
+
+    /**
+     * Whether cloud is enabled for the application.
+     * The value <b>true</b> means the cloud is enabled; the <b>false</b> means
+     * the opposite.
+     *
+     * @type { boolean }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    cloudSwitch: boolean;
+
+    /**
+     * Application instance ID.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    instanceId: number;
+  }
+
+  /**
+   * Enumerates the field types.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export enum FieldType {
+    /**
+     * NULL.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    NULL = 0,
+
+    /**
+     * Number.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    NUMBER,
+
+    /**
+     * Real.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    REAL,
+
+    /**
+     * Text.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    TEXT,
+
+    /**
+     * Boolean.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    BOOL,
+
+    /**
+     * BLOB.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    BLOB,
+
+    /**
+     * Asset. For details, see {@link relationalStore.Asset}.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    ASSET,
+
+    /**
+     * Assets. For details, see {@link relationalStore.Assets}.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    ASSETS
+  }
+
+  /**
+   * Defines the fields.
+   *
+   * @interface Field
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface Field {
+    /**
+     * Alias of the field on the server.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    alias: string;
+
+    /**
+     * Column name.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    colName: string;
+
+    /**
+     * Type of the field. For details, see {@link FieldType}.
+     *
+     * @type { FieldType }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    type: FieldType;
+
+    /**
+     * Whether the current column holds the primary key.
+     *
+     * @type { boolean }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    primary: boolean;
+
+    /**
+     * Whether the current column is nullable.
+     *
+     * @type { boolean }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    nullable: boolean;
+  }
+
+  /**
+   * Defines a table.
+   *
+   * @interface Table
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface Table {
+    /**
+     * Alias of the table on the server.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    alias: string;
+
+    /**
+     * Name of the table.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    name: string;
+
+    /**
+     * Fields in the table. For details, see {@link Field}.
+     *
+     * @type { Field[] }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    fields: Field[];
+  }
+
+  /**
+   * Defines a database.
+   *
+   * @interface Database
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface Database {
+    /**
+     * Name of the database.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    name: string;
+
+    /**
+     * Alias of the database on the server.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    alias: string;
+
+    /**
+     * Tables in the database. For details, see {@link Table}.
+     *
+     * @type { Table[] }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    tables: Table[];
+  }
+
+  /**
+   * Defines the application schema.
+   *
+   * @interface AppSchema
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface AppSchema {
+    /**
+     * Bundle name of the application.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    bundleName: string;
+
+    /**
+     * Schema version.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    version: number;
+
+    /**
+     * Databases {@link Database} of the application.
+     *
+     * @type { Array<Database> }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    databases: Array<Database>;
+  }
+
+  /**
+   * Defines the data in the cloud.
+   *
+   * @interface CloudData
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface CloudData {
+    /**
+     * Next cursor for query.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    nextCursor: string;
+
+    /**
+     * Whether the server has more data to query {@link CloudDB.query()}.
+     *
+     * @type { boolean }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    hasMore: boolean;
+
+    /**
+     * Array of data queried, including the data values and extension
+     * values {@link ExtensionValue}.
+     *
+     * @type { Array<ValuesBucket> }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    values: Array<ValuesBucket>;
+  }
+
+  /**
+   * Defines the subscription information.
+   *
+   * @interface SubscribeInfo
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface SubscribeInfo {
+    /**
+     * Subscription expiration time, in milliseconds.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    expirationTime: number;
+
+    /**
+     * Data to be observed.
+     *
+     * @type { object }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    subscribe: { [bundleName: string]: Array<SubscribeId> };
+  }
+
+  /**
+   * Defines the subscription ID.
+   *
+   * @interface SubscribeId
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface SubscribeId {
+    /**
+     * Alias of the database on the server.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    databaseAlias: string;
+
+    /**
+     * Subscription ID generated by {@link CloudService.subscribe()}.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    id: string;
+  }
+
+  /**
+   * Enumerates the operations that can be performed on the database.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export enum Flag {
+    /**
+     * Insert data.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    INSERT,
+
+    /**
+     * Update data.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    UPDATE,
+
+    /**
+     * Delete data.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    DELETE
+  }
+
+  /**
+   * Defines the extension values.
+   *
+   * @interface ExtensionValue
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface ExtensionValue {
+    /**
+     * ID generated by {@link CloudDB.insert()}.
+     * An ID is generated for each row when data is first inserted to the cloud.
+     * The ID must be unique for each table.
+     *
+     * @type { string }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    readonly id: string;
+
+    /**
+     * Time when the row data was created.
+     *
+     * @type { number }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    readonly createTime: number;
+
+    /**
+     * Time when the row data was last modified.
+     *
+     * @type { number }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    readonly modifyTime: number;
+
+    /**
+     * Database operation.
+     *
+     * @type { Flag }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    readonly operation: Flag;
+  }
+
+  /**
+   * Defines the lock information.
+   *
+   * @interface LockInfo
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface LockInfo {
+    /**
+     * Duration for which the cloud database is locked, in seconds.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    interval: number;
+
+    /**
+     * Session ID for locking the cloud database.
+     *
+     * @type { number }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    sessionId: number;
+  }
+
+  /**
+   * Enumerates the error codes.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export enum ErrorCode {
+    /**
+     * Successful.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    SUCCESS,
+
+    /**
+     * Unknown error.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    UNKNOWN_ERROR,
+
+    /**
+     * Network error.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    NETWORK_ERROR,
+
+    /**
+     * Cloud is disabled.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    CLOUD_DISABLED,
+
+    /**
+     * The cloud database is locked by others.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    LOCKED_BY_OTHERS,
+
+    /**
+     * The number of records exceeds the limit.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    RECORD_LIMIT_EXCEEDED,
+
+    /**
+     * The cloud has no space for the asset.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    NO_SPACE_FOR_ASSET
+  }
+
   /**
    * Defines participant.
    *
@@ -50,17 +762,343 @@ declare namespace cloudExtension {
    * @systemapi
    * @since 11
    */
-  function createShareServiceStub(instance: ShareService): Promise<rpc.RemoteObject>;
+  function createShareServiceStub(instance: ShareCenter): Promise<rpc.RemoteObject>;
+
+  /**
+   * Creates a cloud service stub with the specified instance.
+   *
+   * @param { CloudService } instance - Indicates the <b>CloudService</b> instance.
+   * @returns { Promise<rpc.RemoteObject> } Returns the remote object.
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  function createCloudServiceStub(instance: CloudService): Promise<rpc.RemoteObject>;
+
+  /**
+   * Creates a cloud database stub with the specified instance.
+   *
+   * @param { CloudDB } instance - Indicates the <b>CloudDB</b> instance.
+   * @returns { Promise<rpc.RemoteObject> } Returns the remote object.
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  function createCloudDBStub(instance: CloudDB): Promise<rpc.RemoteObject>;
+
+  /**
+   * Creates an asset loader stub with the specified instance.
+   *
+   * @param { AssetLoader } instance - Indicates the <b>AssetLoader</b> instance.
+   * @returns { Promise<rpc.RemoteObject> } Returns remote object.
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  function createAssetLoaderStub(instance: AssetLoader): Promise<rpc.RemoteObject>;
+
+  /**
+   * Provides interfaces for implementing CloudService.
+   *
+   * @interface CloudService
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface CloudService {
+    /**
+     * Obtains the service information.
+     *
+     * @returns { Promise<ServiceInfo> } Returns the service information obtained.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    getServiceInfo(): Promise<ServiceInfo>;
+
+    /**
+     * Obtains the brief application information.
+     *
+     * @returns { Promise<{ [bundleName: string]: AppBriefInfo }> }
+     * Returns the key-value pairs corresponding to <b>bundle</b> and
+     * <b>AppBriefInfo</b>.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    getAppBriefInfo(): Promise<{ [bundleName: string]: AppBriefInfo }>;
+
+    /**
+     * Obtains the application schema information.
+     *
+     * @param { string } bundleName - Indicates the bundle name of the application.
+     * @returns { Promise<Result<AppSchema>> } Returns <b>AppSchema</b>.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    getAppSchema(bundleName: string): Promise<Result<AppSchema>>;
+
+    /**
+     * Subscribes to data changes in the cloud.
+     * When the cloud server data is changed, the server notifies the device of
+     * the data change.
+     *
+     * @param { object } subInfo - Indicates
+     * the data to be subscribed to, that is, the key-value pairs corresponding
+     * to an array of bundle names and databases.
+     * @param { number } expirationTime - Indicates the subscription expiration
+     * time.
+     * @returns { Promise<Result<SubscribeInfo>> } Returns <b>SubscribeInfo</b>.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    subscribe(
+        subInfo: { [bundleName: string]: Array<Database> },
+        expirationTime: number
+    ): Promise<Result<SubscribeInfo>>;
+
+    /**
+     * Unsubscribes from the data changes in the cloud.
+     *
+     * @param { object } unsubscribeInfo - Indicates
+     * the data to be unsubscribe from, that is, the key-value pairs
+     *  corresponding to an array of bundle names and databases.
+     * @returns { Promise<number> } Returns unsubscribeInfo result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    unsubscribe(unsubscribeInfo: { [bundleName: string]: Array<string> }): Promise<number>;
+
+    /**
+     * Connects to a database.
+     *
+     * @param { string } bundleName - Indicates the bundle name of the application.
+     * @param { Database } database - Indicates the database to connect.
+     * @returns { Promise<rpc.RemoteObject> } Returns connectDB RemoteObject.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    connectDB(bundleName: string, database: Database): Promise<rpc.RemoteObject>;
+
+    /**
+     * Connects to an assetLoader.
+     *
+     * @param { string } bundleName - Indicates the bundle name of the application.
+     * @param { Database } database - Indicates the database of bundle.
+     * @returns { Promise<rpc.RemoteObject> } Returns connectAssetLoader RemoteObject.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    connectAssetLoader(bundleName: string, database: Database): Promise<rpc.RemoteObject>;
+
+    /**
+     * Connects to a share center.
+     *
+     * @param { number } userId - Indicates the user ID.
+     * @param { string } bundleName - Indicates the bundle name.
+     * @returns { Promise<rpc.RemoteObject> } Returns connectAssetLoader RemoteObject.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    connectShareCenter(userId: number, bundleName: string): Promise<rpc.RemoteObject>;
+  }
+
+  /**
+   * Provides interfaces for the operations on the cloud database.
+   *
+   * @interface CloudDB
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface CloudDB {
+    /**
+     * Generates the IDs of the rows of data to be inserted to the cloud.
+     * The IDs must be unique for each table.
+     *
+     * @param { number } count - Indicates the number of IDs to generate.
+     * @returns { Promise<Result<string[]>> } Returns the IDs generated.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    generateId(count: number): Promise<Result<string[]>>;
+
+    /**
+     * Inserts data to the cloud.
+     *
+     * @param { string } table - Indicates the table name.
+     * @param { ValuesBucket[] } values - Indicates the data to insert.
+     * @param { ValuesBucket[] } extValues - Indicates the extension
+     * values {@link ExtensionValue}.
+     * @returns { Promise<Result<ValuesBucket>> } Returns the insert result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    insert(table: string, values: ValuesBucket[], extValues: ValuesBucket[]): Promise<Result<ValuesBucket>>;
+
+    /**
+     * Updates data in the cloud.
+     *
+     * @param { string } table - Indicates the table name.
+     * @param { ValuesBucket[] } values - Indicates the new data.
+     * @param { ValuesBucket[] } extValues - Indicates the extension
+     * values {@link ExtensionValue}.
+     * @returns { Promise<Result<ValuesBucket>> } Returns the update result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    update(table: string, values: ValuesBucket[], extValues: ValuesBucket[]): Promise<Result<ValuesBucket>>;
+
+    /**
+     * Deletes data.
+     *
+     * @param { string } table - Indicates the table name.
+     * @param { ValuesBucket[] } extValues - Indicates the extension
+     * values {@link ExtensionValue}.
+     * @returns { Promise<Result<ValuesBucket>> } Returns the delete result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    delete(table: string, extValues: ValuesBucket[]): Promise<Result<ValuesBucket>>;
+
+    /**
+     * Queries data.
+     *
+     * @param { string } table - Indicates the table name.
+     * @param { string[] } fields - Indicates the columns to query.
+     * @param { number } queryCount - Indicates the number of data records
+     * to query.
+     * @param { string } queryCursor - Indicates the cursor.
+     * @returns { Promise<Result<CloudData>> } Returns the query result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    query(table: string, fields: string[], queryCount: number, queryCursor: string): Promise<Result<CloudData>>;
+
+    /**
+     * Locks the cloud database.
+     * The cloud database will be unlocked when the lock interval has expired.
+     * When the cloud database is locked, other devices cannot synchronize data
+     * with the cloud.
+     *
+     * @returns { Promise<Result<LockInfo>> } Returns the locked information.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    lock(): Promise<Result<LockInfo>>;
+
+    /**
+     * Uses the heartbeat to extend the lock interval if it is not enough.
+     *
+     * @param { number } sessionId - Indicates the session ID of the heartbeat.
+     * @returns { Promise<Result<LockInfo>> } Returns the time.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    heartbeat(sessionId: number): Promise<Result<LockInfo>>;
+
+    /**
+     * Unlocks the cloud database.
+     *
+     * @param { number } sessionId - Indicates the session ID.
+     * @returns { Promise<Result<boolean>> } Returns the unlock result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    unlock(sessionId: number): Promise<Result<boolean>>;
+  }
+
+  /**
+   * Provides interface for managing cloud assets.
+   *
+   * @interface CloudAsset
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface CloudAsset extends relationalStore.Asset {
+    /**
+     * Asset ID.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    assetId: string;
+
+    /**
+     * Asset hash value.
+     *
+     * @type { string }
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    hash: string;
+  }
+
+  /**
+   * Provides interfaces for implementing the asset loader.
+   *
+   * @interface AssetLoader
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+   * @systemapi
+   * @since 11
+   */
+  export interface AssetLoader {
+
+    /**
+     * Downloads assets.
+     *
+     * @param { string } table - Indicates the name of the table.
+     * @param { string } gid - Indicates the GID.
+     * @param { string } prefix - Indicates the prefix information.
+     * @param { CloudAsset[] } assets - Indicates the assets to download.
+     * @returns { Promise<Result<CloudAsset>[]> } Returns the asset download result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    download(table: string, gid: string, prefix: string, assets: CloudAsset[]): Promise<Result<CloudAsset>[]>;
+
+    /**
+     * Uploads assets.
+     *
+     * @param { string } table - Indicates the name of the table.
+     * @param { string } gid - Indicates the GID.
+     * @param { CloudAsset[] } assets - Indicates the assets to upload.
+     * @returns { Promise<Result<CloudAsset>[]> } Returns the asset upload result.
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
+     * @systemapi
+     * @since 11
+     */
+    upload(table: string, gid: string, assets: CloudAsset[]): Promise<Result<CloudAsset>[]>;
+  }
 
   /**
-   * Provides interfaces for implementing ShareService.
+   * Provides interfaces for implementing ShareCenter.
    *
-   * @interface ShareService
+   * @interface ShareCenter
    * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
    * @systemapi
    * @since 11
    */
-  export interface ShareService {
+  export interface ShareCenter {
     /**
      * Share data with specific participants.
      *
@@ -74,10 +1112,10 @@ declare namespace cloudExtension {
      * @since 11
      */
     share(
-        userId: number,
-        bundleName: string,
-        sharingRes: string,
-        participants: Array<Participant>
+      userId: number,
+      bundleName: string,
+      sharingRes: string,
+      participants: Array<Participant>
     ): Promise<Result<Array<Result<Participant>>>>;
 
     /**
@@ -93,10 +1131,10 @@ declare namespace cloudExtension {
      * @since 11
      */
     unshare(
-        userId: number,
-        bundleName: string,
-        sharingRes: string,
-        participants: Array<Participant>
+      userId: number,
+      bundleName: string,
+      sharingRes: string,
+      participants: Array<Participant>
     ): Promise<Result<Array<Result<Participant>>>>;
 
     /**
@@ -125,10 +1163,10 @@ declare namespace cloudExtension {
      * @since 11
      */
     changePrivilege(
-        userId: number,
-        bundleName: string,
-        sharingRes: string,
-        participants: Array<Participant>
+      userId: number,
+      bundleName: string,
+      sharingRes: string,
+      participants: Array<Participant>
     ): Promise<Result<Array<Result<Participant>>>>;
 
     /**
@@ -143,9 +1181,9 @@ declare namespace cloudExtension {
      * @since 11
      */
     queryParticipants(
-        userId: number,
-        bundleName: string,
-        sharingRes: string
+      userId: number,
+      bundleName: string,
+      sharingRes: string
     ): Promise<Result<Array<Participant>>>;
 
     /**
@@ -160,9 +1198,9 @@ declare namespace cloudExtension {
      * @since 11
      */
     queryParticipantsByInvitation(
-        userId: number,
-        bundleName: string,
-        invitationCode: string
+      userId: number,
+      bundleName: string,
+      invitationCode: string
     ): Promise<Result<Array<Participant>>>;
 
     /**
@@ -178,10 +1216,10 @@ declare namespace cloudExtension {
      * @since 11
      */
     confirmInvitation(
-        userId: number,
-        bundleName: string,
-        invitationCode: string,
-        status: ParticipantStatus
+      userId: number,
+      bundleName: string,
+      invitationCode: string,
+      status: ParticipantStatus
     ): Promise<Result<string /*sharingRes*/>>;
 
     /**
@@ -203,28 +1241,6 @@ declare namespace cloudExtension {
       status: ParticipantStatus
     ): Promise<Result<void>>;
   }
-
-  /**
-   * Provides interfaces for implementing CloudService.
-   *
-   * @interface CloudService
-   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
-   * @systemapi
-   * @since 11
-   */
-  export interface CloudService {
-  /**
-   * Connects to a share center.
-   *
-   * @param { number } userId - Indicates the user ID.
-   * @param { string } bundleName - Indicates the bundle name.
-   * @returns { Promise<rpc.RemoteObject> } Returns connectAssetLoader RemoteObject.
-   * @syscap SystemCapability.DistributedDataManager.CloudSync.Server
-   * @systemapi
-   * @since 11
-   */
-  connectShareCenter(userId: number, bundleName: string): Promise<rpc.RemoteObject>;
-  }
 }
 
-export default cloudExtension;
+export default cloudExtension;
\ No newline at end of file