diff --git a/api/@ohos.data.preferences.d.ts b/api/@ohos.data.preferences.d.ts
index 686904d792a832c88ddb2c8af73a3909dcddf660..37ac09b9e68e550f12da2263980bf976ac370226 100644
--- a/api/@ohos.data.preferences.d.ts
+++ b/api/@ohos.data.preferences.d.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (c) 2022-2025 Huawei Device Co., Ltd.
  * 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
@@ -1910,6 +1910,22 @@ declare namespace preferences {
      * @atomicservice
      * @since 12
      */
+    /**
+     * Registers an observer to listen for changes to the {@ link Preferences} object.
+     *
+     * @param { 'dataChange' } type - Indicates the type of the event to observe.
+     * @param { Array<string> } keys - Indicates one or more keys to listen for.
+     * @param { Callback<Record<string, ValueType>> } callback - Indicates the callback used to return the data change.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     *                                                                   2. Incorrect parameter types;
+     *                                                                   3. Parameter verification failed.
+     * @throws { BusinessError } 15500000 - Inner error.
+     * @syscap SystemCapability.DistributedDataManager.Preferences.Core
+     * @crossplatform
+     * @atomicservice
+     * @since 20
+     * @arkts 1.1&1.2
+     */
     on(type: 'dataChange', keys: Array<string>, callback: Callback<Record<string, ValueType>>): void;
 
     /**
@@ -1991,6 +2007,21 @@ declare namespace preferences {
      * @atomicservice
      * @since 12
      */
+    /**
+     * Unregisters an observer for changes to the {@ link Preferences} object.
+     *
+     * @param { 'dataChange' } type - Indicates the event type.
+     * @param { Array<string> } keys - Indicates the data whose changes are not observed.
+     * @param { Callback<Record<string, ValueType>> } callback - Indicates the callback to unregister.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:
+     * <br>1. Mandatory parameters are left unspecified; <br>2. Incorrect parameter types;
+     * <br>3. Parameter verification failed.
+     * @throws { BusinessError } 15500000 - Inner error.
+     * @syscap SystemCapability.DistributedDataManager.Preferences.Core
+     * @crossplatform
+     * @atomicservice
+     * @since 20
+     */
     off(type: 'dataChange', keys: Array<string>, callback?: Callback<Record<string, ValueType>>): void;
   }
 }
diff --git a/api/@ohos.data.relationalStore.d.ts b/api/@ohos.data.relationalStore.d.ts
index efb9c046112600a407a2df5b232dd732eb6d1e4b..ef63edae9b30cad578cf17ec50ba10584229fa53 100644
--- a/api/@ohos.data.relationalStore.d.ts
+++ b/api/@ohos.data.relationalStore.d.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Copyright (c) 2023-2025 Huawei Device Co., Ltd.
  * 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
@@ -425,7 +425,16 @@ declare namespace relationalStore {
      *
      * @type { ?boolean }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'12', '1.2':'20'}
+     * @since 12
+     */
+    /**
+     * Specifies whether the database opened is read-only.
+     * If isReadOnly is true, other configuration items will become invalid.
+     *
+     * @type { ?boolean }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     isReadOnly?: boolean;
@@ -528,7 +537,15 @@ declare namespace relationalStore {
    *
    * @typedef CryptoParam
    * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-   * @since arkts {'1.1':'14', '1.2':'20'}
+   * @since 14
+   */
+  /**
+   * Specifies the cryptographic parameters used when opening an encrypted database.
+   *
+   * @typedef CryptoParam
+   * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+   * @crossplatform
+   * @since 20
    * @arkts 1.1&1.2
    */
   interface CryptoParam {
@@ -538,7 +555,16 @@ declare namespace relationalStore {
      *
      * @type { Uint8Array }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the key used when opening an encrypted database.
+     * When finished passing the key to the database, its content should be set to all-zero.
+     *
+     * @type { Uint8Array }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     encryptionKey: Uint8Array;
@@ -550,7 +576,17 @@ declare namespace relationalStore {
      *
      * @type { ?number }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the number of KDF iterations used when opening an encrypted database.
+     * Default number is 10000.
+     * When the number is set to 0, use default iteration number and encryption algorithm.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     iterationCount?: number;
@@ -561,7 +597,16 @@ declare namespace relationalStore {
      *
      * @type { ?EncryptionAlgo }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the encryption algorithm when opening an encrypted database.
+     * Default encryption algorithm is AES_256_GCM.
+     *
+     * @type { ?EncryptionAlgo }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     encryptionAlgo?: EncryptionAlgo;
@@ -572,7 +617,16 @@ declare namespace relationalStore {
      *
      * @type { ?HmacAlgo }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the HMAC algorithm when opening an encrypted database.
+     * Default HMAC algorithm is SHA256.
+     *
+     * @type { ?HmacAlgo }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     hmacAlgo?: HmacAlgo;
@@ -583,7 +637,16 @@ declare namespace relationalStore {
      *
      * @type { ?KdfAlgo }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the KDF algorithm when opening an encrypted database.
+     * Default KDF SHA algorithm is the same as HMAC algorithm.
+     *
+     * @type { ?KdfAlgo }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     kdfAlgo?: KdfAlgo;
@@ -594,7 +657,16 @@ declare namespace relationalStore {
      *
      * @type { ?number }
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * Specifies the page size used when opening an encrypted database.
+     * Default crypto page size is 1024.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     cryptoPageSize?: number;
@@ -633,7 +705,15 @@ declare namespace relationalStore {
    *
    * @enum { number }
    * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-   * @since arkts {'1.1':'14', '1.2':'20'}
+   * @since 14
+   */
+  /**
+   * Enumerates the supported HMAC algorithm when opening a database.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+   * @crossplatform
+   * @since 20
    * @arkts 1.1&1.2
    */
   enum HmacAlgo {
@@ -641,7 +721,14 @@ declare namespace relationalStore {
      * SHA1: HMAC_SHA1 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * SHA1: HMAC_SHA1 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     SHA1 = 0,
@@ -650,7 +737,14 @@ declare namespace relationalStore {
      * SHA256: HMAC_SHA256 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * SHA256: HMAC_SHA256 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     SHA256,
@@ -659,7 +753,14 @@ declare namespace relationalStore {
      * SHA512: HMAC_SHA512 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * SHA512: HMAC_SHA512 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     SHA512
@@ -670,7 +771,15 @@ declare namespace relationalStore {
    *
    * @enum { number }
    * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-   * @since arkts {'1.1':'14', '1.2':'20'}
+   * @since 14
+   */
+  /**
+   * Enumerates the supported KDF algorithm when opening a database.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+   * @crossplatform
+   * @since 20
    * @arkts 1.1&1.2
    */
   enum KdfAlgo {
@@ -678,7 +787,14 @@ declare namespace relationalStore {
      * KDF_SHA1: PBKDF2_HMAC_SHA1 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * KDF_SHA1: PBKDF2_HMAC_SHA1 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     KDF_SHA1 = 0,
@@ -687,7 +803,14 @@ declare namespace relationalStore {
      * KDF_SHA256: PBKDF2_HMAC_SHA256 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * KDF_SHA256: PBKDF2_HMAC_SHA256 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     KDF_SHA256,
@@ -696,7 +819,14 @@ declare namespace relationalStore {
      * KDF_SHA512: PBKDF2_HMAC_SHA512 algorithm.
      *
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
-     * @since arkts {'1.1':'14', '1.2':'20'}
+     * @since 14
+     */
+    /**
+     * KDF_SHA512: PBKDF2_HMAC_SHA512 algorithm.
+     *
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
      * @arkts 1.1&1.2
      */
     KDF_SHA512
@@ -1554,6 +1684,14 @@ declare namespace relationalStore {
    * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
    * @since 11
    */
+  /**
+   * Enumerates the field.
+   *
+   * @enum { string }
+   * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+   * @crossplatform
+   * @since 20
+   */
   enum Field {
     /**
      * Cursor field.
@@ -1561,6 +1699,13 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Cursor field.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     CURSOR_FIELD = '#_cursor',
 
     /**
@@ -1569,6 +1714,13 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Origin field. For details, see {@link Origin}.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     ORIGIN_FIELD = '#_origin',
 
     /**
@@ -1578,6 +1730,14 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Deleted flag field.
+     * Indicates whether data has deleted in cloud.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     DELETED_FLAG_FIELD = '#_deleted_flag',
 
     /**
@@ -1587,6 +1747,14 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 12
      */
+    /**
+     * Data status field.
+     * Indicates data status.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     DATA_STATUS_FIELD = '#_data_status',
 
     /**
@@ -1595,6 +1763,13 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Owner field.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     OWNER_FIELD = '#_cloud_owner',
 
     /**
@@ -1603,6 +1778,13 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Privilege field.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     PRIVILEGE_FIELD = '#_cloud_privilege',
 
     /**
@@ -1611,6 +1793,13 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
      * @since 11
      */
+    /**
+     * Sharing resource field.
+     *
+     * @syscap SystemCapability.DistributedDataManager.CloudSync.Client
+     * @crossplatform
+     * @since 20
+     */
     SHARING_RESOURCE_FIELD = '#_sharing_resource_field'
   }
 
@@ -2566,6 +2755,20 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 12
      */
+    /**
+     * Sets the RdbPredicates to match the field whose data type is string and value
+     * does not contain the specified value.
+     * This method is similar to "Not like %value%" of the SQL statement.
+     *
+     * @param { string } field - Indicates the column name in the database table.
+     * @param { string } value - Indicates the value that is not contained.
+     * @returns { RdbPredicates } - The {@Link RdbPredicates} set.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     * <br>2. Incorrect parameter types.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     notContains(field: string, value: string): RdbPredicates;
 
     /**
@@ -2581,6 +2784,20 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 12
      */
+    /**
+     * Sets the RdbPredicates to match the field whose data type is string and value
+     * is not like the specified value.
+     * This method is similar to "Not like" of the SQL statement.
+     *
+     * @param { string } field - Indicates the column name in the database table.
+     * @param { string } value - Indicates the value to compare against.
+     * @returns { RdbPredicates } - The {@Link RdbPredicates} set.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     * <br>2. Incorrect parameter types.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     notLike(field: string, value: string): RdbPredicates;
 
     /**
@@ -3693,6 +3910,41 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 14
      */
+    /**
+     * Obtains the value of the specified column in the current row.
+     * The implementation class determines whether to throw an exception if the value of the specified column
+     * in the current row is null or the specified column is not of the Assets type.
+     * Inserting an empty blob, after API14 and API14, the obtained value is an empty blob; Before API 14,
+     * the obtained value was null.
+     *
+     * @param { number } columnIndex - Indicates the specified column index, which starts from 0.
+     * @returns { ValueType } The value of the specified column.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     * <br>2. Incorrect parameter types.
+     * @throws { BusinessError } 14800000 - Inner error.
+     * @throws { BusinessError } 14800011 - Failed to open the database because it is corrupted.
+     * @throws { BusinessError } 14800012 - ResultSet is empty or pointer index is out of bounds.
+     * @throws { BusinessError } 14800013 - Resultset is empty or column index is out of bounds.
+     * @throws { BusinessError } 14800014 - The RdbStore or ResultSet is already closed.
+     * @throws { BusinessError } 14800021 - SQLite: Generic error.
+     * Possible causes: Insert failed or the updated data does not exist.
+     * @throws { BusinessError } 14800022 - SQLite: Callback routine requested an abort.
+     * @throws { BusinessError } 14800023 - SQLite: Access permission denied.
+     * @throws { BusinessError } 14800024 - SQLite: The database file is locked.
+     * @throws { BusinessError } 14800025 - SQLite: A table in the database is locked.
+     * @throws { BusinessError } 14800026 - SQLite: The database is out of memory.
+     * @throws { BusinessError } 14800027 - SQLite: Attempt to write a readonly database.
+     * @throws { BusinessError } 14800028 - SQLite: Some kind of disk I/O error occurred.
+     * @throws { BusinessError } 14800029 - SQLite: The database is full.
+     * @throws { BusinessError } 14800030 - SQLite: Unable to open the database file.
+     * @throws { BusinessError } 14800031 - SQLite: TEXT or BLOB exceeds size limit.
+     * @throws { BusinessError } 14800032 - SQLite: Abort due to constraint violation.
+     * @throws { BusinessError } 14800033 - SQLite: Data type mismatch.
+     * @throws { BusinessError } 14800034 - SQLite: Library used incorrectly.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     getValue(columnIndex: number): ValueType;
 
     /**
@@ -4359,6 +4611,40 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 12
      */
+    /**
+     * Inserts a row of data into the target table with sync interface.
+     *
+     * @param { string } table - Indicates the target table.
+     * @param { sendableRelationalStore.ValuesBucket } values - Indicates the row of data
+     *   {@link sendableRelationalStore.ValuesBucket} to be inserted into the table.
+     * @param { ConflictResolution } conflict - Indicates the {@link ConflictResolution} to insert data into the table.
+     * @returns { number } The row ID if the operation is successful. return -1 otherwise.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     * <br>2. Incorrect parameter types.
+     * @throws { BusinessError } 14800000 - Inner error.
+     * @throws { BusinessError } 14800011 - Failed to open the database because it is corrupted.
+     * @throws { BusinessError } 14800014 - The RdbStore or ResultSet is already closed.
+     * @throws { BusinessError } 14800015 - The database does not respond.
+     * @throws { BusinessError } 14800021 - SQLite: Generic error.
+     * Possible causes: Insert failed or the updated data does not exist.
+     * @throws { BusinessError } 14800022 - SQLite: Callback routine requested an abort.
+     * @throws { BusinessError } 14800023 - SQLite: Access permission denied.
+     * @throws { BusinessError } 14800024 - SQLite: The database file is locked.
+     * @throws { BusinessError } 14800025 - SQLite: A table in the database is locked.
+     * @throws { BusinessError } 14800026 - SQLite: The database is out of memory.
+     * @throws { BusinessError } 14800027 - SQLite: Attempt to write a readonly database.
+     * @throws { BusinessError } 14800028 - SQLite: Some kind of disk I/O error occurred.
+     * @throws { BusinessError } 14800029 - SQLite: The database is full.
+     * @throws { BusinessError } 14800030 - SQLite: Unable to open the database file.
+     * @throws { BusinessError } 14800031 - SQLite: TEXT or BLOB exceeds size limit.
+     * @throws { BusinessError } 14800032 - SQLite: Abort due to constraint violation.
+     * @throws { BusinessError } 14800033 - SQLite: Data type mismatch.
+     * @throws { BusinessError } 14800034 - SQLite: Library used incorrectly.
+     * @throws { BusinessError } 14800047 - The WAL file size exceeds the default limit.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     insertSync(table: string, values: sendableRelationalStore.ValuesBucket, conflict?: ConflictResolution): number;
 
     /**
@@ -7736,6 +8022,20 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 12
      */
+    /**
+     * Subscribes to the SQL statistics.
+     * @param { 'statistics' } event - Indicates the event type, which must be 'statistics'.
+     * @param { Callback<SqlExecutionInfo> } observer -
+     * Indicates the callback used to return the SQL execution statistics {@link SqlExeInfo} in the database.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:
+     * 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types.
+     * @throws { BusinessError } 801 - Capability not supported.
+     * @throws { BusinessError } 14800000 - Inner error.
+     * @throws { BusinessError } 14800014 - The RdbStore or ResultSet is already closed.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     on(event: 'statistics', observer: Callback<SqlExecutionInfo> ): void;
 
     /**
@@ -7967,6 +8267,16 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 12
      */
+    /**
+     * Close the RdbStore and all resultSets.
+     *
+     * @returns { Promise<void> } The promise returned by the function.
+     * @throws { BusinessError } 401 - Parameter error. The store must not be nullptr.
+     * @throws { BusinessError } 14800000 - Inner error.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     close(): Promise<void>;
 
     /**
@@ -8743,6 +9053,35 @@ declare namespace relationalStore {
      * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
      * @since 14
      */
+    /**
+     * Executes a SQL statement that contains specified parameters and returns a value of ValueType.
+     *
+     * @param { string } sql - Indicates the SQL statement to execute.
+     * @param { Array<ValueType> } args - Indicates the {@link ValueType} values of the parameters in the SQL statement.
+     * The values are strings.
+     * @returns { Promise<ValueType> } The promise returned by the function.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Mandatory parameters are left unspecified;
+     * <br>2. Incorrect parameter types.
+     * @throws { BusinessError } 801 - Capability not supported the sql(attach,begin,commit,rollback etc.).
+     * @throws { BusinessError } 14800000 - Inner error.
+     * @throws { BusinessError } 14800011 - Failed to open the database because it is corrupted.
+     * @throws { BusinessError } 14800014 - The RdbStore or ResultSet is already closed.
+     * @throws { BusinessError } 14800021 - SQLite: Generic error.
+     * Possible causes: Insert failed or the updated data does not exist.
+     * @throws { BusinessError } 14800023 - SQLite: Access permission denied.
+     * @throws { BusinessError } 14800024 - SQLite: The database file is locked.
+     * @throws { BusinessError } 14800025 - SQLite: A table in the database is locked.
+     * @throws { BusinessError } 14800026 - SQLite: The database is out of memory.
+     * @throws { BusinessError } 14800027 - SQLite: Attempt to write a readonly database.
+     * @throws { BusinessError } 14800028 - SQLite: Some kind of disk I/O error occurred.
+     * @throws { BusinessError } 14800029 - SQLite: The database is full.
+     * @throws { BusinessError } 14800031 - SQLite: TEXT or BLOB exceeds size limit.
+     * @throws { BusinessError } 14800033 - SQLite: Data type mismatch.
+     * @throws { BusinessError } 14800047 - The WAL file size exceeds the default limit.
+     * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
+     * @crossplatform
+     * @since 20
+     */
     execute(sql: string, args?: Array<ValueType>): Promise<ValueType>;
 
     /**
diff --git a/api/@ohos.data.uniformTypeDescriptor.d.ts b/api/@ohos.data.uniformTypeDescriptor.d.ts
index 5d1d9c4a1cf9903445f02b2bc47656392d46925c..6d5bc0f67b5f99461627c0164650de1f391b56c1 100644
--- a/api/@ohos.data.uniformTypeDescriptor.d.ts
+++ b/api/@ohos.data.uniformTypeDescriptor.d.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023-2024 Huawei Device Co., Ltd.
+ * Copyright (c) 2023-2025 Huawei Device Co., Ltd.
  * 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
@@ -1836,6 +1836,14 @@ declare namespace uniformTypeDescriptor {
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @since 11
    */
+  /**
+   * Class describing the uniform data type defined in the {@code UniformDataType}, which consists of attributes and
+   * <br>methods describing the uniform data type and its relationships to other uniform data types.
+   *
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
+   */
   class TypeDescriptor {
     /**
      * Type ID of the uniform data type, which corresponds to the enum string in the {@code UniformDataType}.
@@ -1845,6 +1853,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Type ID of the uniform data type, which corresponds to the enum string in the {@code UniformDataType}.
+     *
+     * @type { string }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly typeId: string;
 
     /**
@@ -1855,6 +1872,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Uniform data type IDs that the uniform data type belongs to.
+     *
+     * @type { Array<string> }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly belongingToTypes: Array<string>;
 
     /**
@@ -1865,6 +1891,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * A textual description for the uniform data type.
+     *
+     * @type { string }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly description: string;
 
     /**
@@ -1875,6 +1910,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Reference URL for the uniform data type, which describes the detail information of the type.
+     *
+     * @type { string }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly referenceURL: string;
 
     /**
@@ -1885,6 +1929,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Default icon file path for the uniform data type.
+     *
+     * @type { string }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly iconFile: string;
 
     /**
@@ -1895,9 +1948,18 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 12
      */
+    /**
+     * File name extensions for the uniform data type.
+     *
+     * @type { Array<string> }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
      readonly filenameExtensions: Array<string>;
 
-    /**
+     /**
      * MIMETypes of the uniform data type.
      *
      * @type { Array<string> }
@@ -1905,6 +1967,15 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 12
      */
+    /**
+     * MIMETypes of the uniform data type.
+     *
+     * @type { Array<string> }
+     * @readonly
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     readonly mimeTypes: Array<string>;
 
     /**
@@ -1917,6 +1988,17 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Checks whether the uniform data type belongs to the given uniform data type.
+     *
+     * @param { string } type - A uniform data type to be compared.
+     * @returns { boolean } Returns true if the data type belongs to the given data type, else false.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+     * <br>2.Incorrect parameters types.
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     belongsTo(type: string): boolean;
 
     /**
@@ -1929,6 +2011,17 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Checks whether the uniform data type is the lower level type of the given uniform data type.
+     *
+     * @param { string } type - A uniform data type to be compared.
+     * @returns { boolean } Returns true if the data type is the lower level type of the given data type, else false.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+     * <br>2.Incorrect parameters types.
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     isLowerLevelType(type: string): boolean;
 
     /**
@@ -1941,6 +2034,17 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Checks whether the uniform data type is the higher level type of the given uniform data type.
+     *
+     * @param { string } type - A uniform data type to be compared.
+     * @returns { boolean } Returns true if the data type is the higher level type of the given data type, else false.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+     * <br>2.Incorrect parameters types.
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     isHigherLevelType(type: string): boolean;
 
     /**
@@ -1953,6 +2057,17 @@ declare namespace uniformTypeDescriptor {
      * @syscap SystemCapability.DistributedDataManager.UDMF.Core
      * @since 11
      */
+    /**
+     * Checks whether the uniform type descriptor is equal to the given uniform type descriptor.
+     *
+     * @param { TypeDescriptor } typeDescriptor - A uniform type descriptor to be compared.
+     * @returns { boolean } Returns true if the type descriptor is equal to the given type descriptor, else false.
+     * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+     * <br>2.Incorrect parameters types.
+     * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+     * @crossplatform
+     * @since 20
+     */
     equals(typeDescriptor: TypeDescriptor): boolean;
   }
 
@@ -1967,6 +2082,18 @@ declare namespace uniformTypeDescriptor {
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @since 11
    */
+  /**
+   * Queries and returns the uniform type descriptor by the given uniform data type ID.
+   *
+   * @param { string } typeId - Uniform data type ID.
+   * @returns { TypeDescriptor } Returns the uniform type descriptor corresponding to the uniform data type ID or null
+   * <br>if the uniform data type does not exist.
+   * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+   * <br>2.Incorrect parameters types.
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
+   */
   function getTypeDescriptor(typeId: string): TypeDescriptor;
 
   /**
@@ -1981,7 +2108,22 @@ declare namespace uniformTypeDescriptor {
    * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
    * <br>2.Incorrect parameters types.
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
-   * @since arkts {'1.1':'11', '1.2':'20'}
+   * @since 11
+   */
+  /**
+   * Queries and returns the uniform type descriptor by the given filename extension and the uniform data type it
+   * belongs to.
+   *
+   * @param { string } filenameExtension - Filename extension.
+   * @param { string } [belongsTo] - A uniform data type ID it belongs to.
+   * @returns { string } Returns the uniform data type ID corresponding to the given filename extension and the
+   * <br>uniform data type it belongs to(If the 'belongsTo' parameter is set) or flexible type if the uniform data type
+   * does not exist.
+   * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+   * <br>2.Incorrect parameters types.
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
    * @arkts 1.1&1.2
    */
   function getUniformDataTypeByFilenameExtension(filenameExtension: string, belongsTo?: string): string;
@@ -1998,6 +2140,19 @@ declare namespace uniformTypeDescriptor {
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @since 11
    */
+  /**
+   * Queries and returns the uniform type descriptor by the given MIME type and the uniform data type it belongs to.
+   *
+   * @param { string } mimeType - MIME type.
+   * @param { string } [belongsTo] - A uniform data type ID it belongs to.
+   * @returns { string } Returns the uniform data type ID corresponding to the given MIME type and the uniform data type
+   * <br>it belongs to(If the 'belongsTo' parameter is set) or flexible type if the uniform data type does not exist.
+   * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+   * <br>2.Incorrect parameters types.
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
+   */
   function getUniformDataTypeByMIMEType(mimeType: string, belongsTo?: string): string;
 
   /**
@@ -2014,6 +2169,21 @@ declare namespace uniformTypeDescriptor {
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @since 13
    */
+  /**
+   * Queries and returns the uniform type descriptor list by the given filename extension and the uniform data type it
+   * belongs to.
+   *
+   * @param { string } filenameExtension - Filename extension.
+   * @param { string } [belongsTo] - A uniform data type ID it belongs to.
+   * @returns { Array<string> } Returns the uniform data type ID list corresponding to the given filename extension and
+   * the uniform data type it belongs to(If the 'belongsTo' parameter is set) or flexible type if the uniform data type
+   * does not exist.
+   * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+   * <br>2.Incorrect parameters types.
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
+   */
   function getUniformDataTypesByFilenameExtension(filenameExtension: string, belongsTo?: string): Array<string>;
 
   /**
@@ -2030,6 +2200,21 @@ declare namespace uniformTypeDescriptor {
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @since 13
    */
+  /**
+   * Queries and returns the uniform type descriptor list by the given MIME type and the uniform data type it belongs
+   * to.
+   *
+   * @param { string } mimeType - MIME type.
+   * @param { string } [belongsTo] - A uniform data type ID it belongs to.
+   * @returns { Array<string> } Returns the uniform data type ID list corresponding to the given MIME type and the
+   * uniform data type it belongs to(If the 'belongsTo' parameter is set) or flexible type if the uniform data type does
+   * not exist.
+   * @throws { BusinessError } 401 - Parameter error. Possible causes:1.Mandatory parameters are left unspecified;
+   * <br>2.Incorrect parameters types.
+   * @syscap SystemCapability.DistributedDataManager.UDMF.Core
+   * @crossplatform
+   * @since 20
+   */
   function getUniformDataTypesByMIMEType(mimeType: string, belongsTo?: string): Array<string>;
 }
 
diff --git a/api/@ohos.request.d.ts b/api/@ohos.request.d.ts
index 082e31d35afa05f0dae9ad9f30a7f0564baba2a0..689c7e7949dc52c00aa75a1417f326d32f65f723 100644
--- a/api/@ohos.request.d.ts
+++ b/api/@ohos.request.d.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (c) 2022-2025 Huawei Device Co., Ltd.
  * 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
@@ -1986,6 +1986,16 @@ declare namespace request {
      * @syscap SystemCapability.MiscServices.Upload
      * @since 11
      */
+    /**
+     * The index of paths for a task.
+     * Usually used for a continuous job.
+     * The default is 0.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.MiscServices.Upload
+     * @crossplatform
+     * @since 20
+     */
     index?: number;
     /**
      * The start point of a file.
@@ -1997,6 +2007,17 @@ declare namespace request {
      * @syscap SystemCapability.MiscServices.Upload
      * @since 11
      */
+    /**
+     * The start point of a file.
+     * Usually used for a continuous job.
+     * It will start read at the point in upload.
+     * The default is 0.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.MiscServices.Upload
+     * @crossplatform
+     * @since 20
+     */
     begins?: number;
     /**
      * The end point of a file.
@@ -2008,6 +2029,17 @@ declare namespace request {
      * @syscap SystemCapability.MiscServices.Upload
      * @since 11
      */
+    /**
+     * The end point of a file.
+     * Usually used for a continuous job.
+     * It will end read at the point in upload.
+     * The default is -1 indicating the end of the data for upload.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.MiscServices.Upload
+     * @crossplatform
+     * @since 20
+     */
     ends?: number;
     /**
      * A list of files to be uploaded. Please use multipart/form-data to submit.
@@ -2664,6 +2696,14 @@ declare namespace request {
      * @syscap SystemCapability.Request.FileTransferAgent
      * @since 11
      */
+    /**
+     * Broadcast events for the request.
+     *
+     * @enum { string } BroadcastEvent
+     * @syscap SystemCapability.Request.FileTransferAgent
+     * @crossplatform
+     * @since 20
+     */
     enum BroadcastEvent {
       /**
        * Completion event for the task.
@@ -2673,6 +2713,15 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Completion event for the task.
+       * The code in the commonEventData can only be "0x40"(COMPLETE) or "0x41"(FAILED), same as "State".
+       * The data in the commonEventData contains the id of the task.
+       *
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       COMPLETE = 'ohos.request.event.COMPLETE'
     }
 
@@ -3341,6 +3390,16 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 12
        */
+      /**
+       * The proxy url for the task.
+       * Only this format is supported: http://<domain or IP-address>:<port>
+       * Username and password are not supported.
+       *
+       * @type { ?string }
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       proxy?: string;
       /**
        * The index of paths for a task.
@@ -4495,7 +4554,17 @@ declare namespace request {
      * @interface HttpResponse
      * @syscap SystemCapability.Request.FileTransferAgent
      * @atomicservice
-     * @since arkts {'1.1':'12', '1.2':'20'}
+     * @since 12
+     */
+    /**
+     * The HTTP response.
+     * Describes the data structure of the task response header.
+     *
+     * @interface HttpResponse
+     * @syscap SystemCapability.Request.FileTransferAgent
+     * @crossplatform
+     * @atomicservice
+     * @since 20
      * @arkts 1.1&1.2
      */
     interface HttpResponse {
@@ -4506,7 +4575,17 @@ declare namespace request {
        * @readonly
        * @syscap SystemCapability.Request.FileTransferAgent
        * @atomicservice
-       * @since arkts {'1.1':'12', '1.2':'20'}
+       * @since 12
+       */
+      /**
+       * The version of the HTTP response.
+       *
+       * @type { string }
+       * @readonly
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
        * @arkts 1.1&1.2
        */
       readonly version: string,
@@ -4517,7 +4596,17 @@ declare namespace request {
        * @readonly
        * @syscap SystemCapability.Request.FileTransferAgent
        * @atomicservice
-       * @since arkts {'1.1':'12', '1.2':'20'}
+       * @since 12
+       */
+      /**
+       * The status code of the HTTP response.
+       *
+       * @type { number }
+       * @readonly
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
        * @arkts 1.1&1.2 
        */
       readonly statusCode: number,
@@ -4528,7 +4617,17 @@ declare namespace request {
        * @readonly
        * @syscap SystemCapability.Request.FileTransferAgent
        * @atomicservice
-       * @since arkts {'1.1':'12', '1.2':'20'}
+       * @since 12
+       */
+      /**
+       * The reason of the HTTP response.
+       *
+       * @type { string }
+       * @readonly
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
        * @arkts 1.1&1.2 
        */
       readonly reason: string,
@@ -4541,6 +4640,16 @@ declare namespace request {
        * @atomicservice
        * @since 12
        */
+      /**
+       * The headers of the HTTP response.
+       *
+       * @type { Map<string, Array<string>> }
+       * @readonly
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
+       */
       readonly headers: Map<string, Array<string>>,
     }
 
@@ -4816,6 +4925,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Enables the specified callback.
+       * Subscribes to task pause events.
+       *
+       * @param { 'pause' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       on(event: 'pause', callback: (progress: Progress) => void): void;
       /**
        * Disables the specified callback.
@@ -4828,6 +4949,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Disables the specified callback.
+       * Unsubscribes from the foreground task pause event.
+       *
+       * @param { 'pause' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       off(event: 'pause', callback?: (progress: Progress) => void): void;
       /**
        * Enables the specified callback.
@@ -4840,6 +4973,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Enables the specified callback.
+       * Subscribes to task resume events.
+       *
+       * @param { 'resume' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       on(event: 'resume', callback: (progress: Progress) => void): void;
       /**
        * Disables the specified callback.
@@ -4852,6 +4997,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Disables the specified callback.
+       * Unsubscribes from the foreground task resume event.
+       *
+       * @param { 'resume' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       off(event: 'resume', callback?: (progress: Progress) => void): void;
       /**
        * Enables the specified callback.
@@ -4864,6 +5021,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Enables the specified callback.
+       * Subscribes to task removal events.
+       *
+       * @param { 'remove' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       on(event: 'remove', callback: (progress: Progress) => void): void;
       /**
        * Disables the specified callback.
@@ -4876,6 +5045,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Disables the specified callback.
+       * Unsubscribes from the task removal event.
+       *
+       * @param { 'remove' } event - event types.
+       * @param { function } callback - callback function with a `Progress` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       off(event: 'remove', callback?: (progress: Progress) => void): void;
       /**
        * Enables the response callback.
@@ -4887,7 +5068,20 @@ declare namespace request {
        * <br>2. Incorrect parameter type. 3. Parameter verification failed.
        * @syscap SystemCapability.Request.FileTransferAgent
        * @atomicservice
-       * @since arkts {'1.1':'12', '1.2':'20'}
+       * @since 12
+       */
+      /**
+       * Enables the response callback.
+       * Subscribes to task response headers.
+       *
+       * @param { 'response' } event - event types.
+       * @param { Callback<HttpResponse> } callback - callback function with an `HttpResponse` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
        * @arkts 1.1&1.2 
        */
       on(event: 'response', callback: Callback<HttpResponse>): void;
@@ -4903,6 +5097,19 @@ declare namespace request {
        * @atomicservice
        * @since 12
        */
+      /**
+       * Disables the response callback.
+       * Unsubscribes from task response headers.
+       *
+       * @param { 'response' } event - event types.
+       * @param { Callback<HttpResponse> } callback - callback function with an `HttpResponse` argument.
+       * @throws { BusinessError } 401 - Parameter error. Possible causes: 1. Missing mandatory parameters.
+       * <br>2. Incorrect parameter type. 3. Parameter verification failed.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @atomicservice
+       * @since 20
+       */
       off(event: 'response', callback?: Callback<HttpResponse>): void;
       /**
        * Enables the 'faultOccur' callback.
@@ -5053,6 +5260,16 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Pauses a task that is waiting, running, or retrying.
+       *
+       * @param { AsyncCallback<void> } callback - callback function with a boolean argument indicating the calling result.
+       * @throws { BusinessError } 13400003 - Task service ability error.
+       * @throws { BusinessError } 21900007 - Operation with wrong task state.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       pause(callback: AsyncCallback<void>): void;
       /**
        * Pauses the background task.
@@ -5073,6 +5290,16 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Pauses a task that is waiting, running, or retrying.
+       *
+       * @returns { Promise<void> } the promise returned by the function.
+       * @throws { BusinessError } 13400003 - Task service ability error.
+       * @throws { BusinessError } 21900007 - Operation with wrong task state.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       pause(): Promise<void>;
       /**
        * Resumes the background task.
@@ -5097,6 +5324,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Resumes a paused task.
+       *
+       * @permission ohos.permission.INTERNET
+       * @param { AsyncCallback<void> } callback - callback function with a boolean argument indicating the calling result.
+       * @throws { BusinessError } 201 - Permission denied.
+       * @throws { BusinessError } 13400003 - Task service ability error.
+       * @throws { BusinessError } 21900007 - Operation with wrong task state.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       resume(callback: AsyncCallback<void>): void;
       /**
        * Resumes the background task.
@@ -5121,6 +5360,18 @@ declare namespace request {
        * @syscap SystemCapability.Request.FileTransferAgent
        * @since 11
        */
+      /**
+       * Resumes a paused task.
+       *
+       * @permission ohos.permission.INTERNET
+       * @returns { Promise<void> } the promise returned by the function.
+       * @throws { BusinessError } 201 - Permission denied.
+       * @throws { BusinessError } 13400003 - Task service ability error.
+       * @throws { BusinessError } 21900007 - Operation with wrong task state.
+       * @syscap SystemCapability.Request.FileTransferAgent
+       * @crossplatform
+       * @since 20
+       */
       resume(): Promise<void>;
       /**
        * Stop a running, waiting, or retrying task.