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!18513 [翻译完成】#I6YG2R 

Merge pull request !18513 from Annie_wang/PR17600
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en/application-dev/database/data-sync-of-kv-store.md
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......@@ -79,14 +79,14 @@ When data is added, deleted, or modified, a notification is sent to the subscrib
The following table lists the APIs for cross-device data synchronization of the single KV store. Most of the APIs are executed asynchronously, using a callback or promise to return the result. The following table uses the callback-based APIs as an example. For more information about the APIs, see [Distributed KV Store](../reference/apis/js-apis-distributedKVStore.md).
| API| Description|
| API| Description|
| -------- | -------- |
| createKVManager(config: KVManagerConfig): KVManager | Creates a **KvManager** instance to manage database objects.|
| getKVStore<T>(storeId: string, options: Options, callback: AsyncCallback<T>): void | Creates and obtains a KV store of the specified type.|
| put(key: string, value: Uint8Array\|string\|number\|boolean, callback: AsyncCallback<void>): void | Inserts and updates data.|
| on(event: 'dataChange', type: SubscribeType, listener: Callback<ChangeNotification>): void | Subscribes to data changes in the KV store.|
| get(key: string, callback: AsyncCallback<boolean \| string \| number \| Uint8Array>): void | Queries the value of the specified key.|
| sync(deviceIds: string[], mode: SyncMode, delayMs?: number): void | Triggers a manual synchronization of the KV store.|
| createKVManager(config: KVManagerConfig): KVManager | Creates a **KvManager** instance to manage database objects.|
| getKVStore<T>(storeId: string, options: Options, callback: AsyncCallback<T>): void | Creates and obtains a KV store of the specified type.|
| put(key: string, value: Uint8Array\|string\|number\|boolean, callback: AsyncCallback<void>): void | Inserts and updates data.|
| on(event: 'dataChange', type: SubscribeType, listener: Callback<ChangeNotification>): void | Subscribes to data changes in the KV store.|
| get(key: string, callback: AsyncCallback<boolean \| string \| number \| Uint8Array>): void | Queries the value of the specified key.|
| sync(deviceIds: string[], mode: SyncMode, delayMs?: number): void | Triggers a manual synchronization of the KV store.|
## How to Develop
......@@ -100,7 +100,7 @@ The following uses a single KV store as an example to describe how to implement
> The data on a device can be synchronized only to the devices whose data security labels are not higher than the security level of the device. For details, see [Access Control Mechanism in Cross-Device Synchronization](sync-app-data-across-devices-overview.md#access-control-mechanism-in-cross-device-synchronization).
1. Import the module.
```js
import distributedKVStore from '@ohos.data.distributedKVStore';
```
......@@ -115,7 +115,7 @@ The following uses a single KV store as an example to describe how to implement
1. Create a **kvManagerConfig** object based on the application context.
2. Create a **KvManager** instance.
```js
// Obtain the context of the stage model.
import UIAbility from '@ohos.app.ability.UIAbility';
......@@ -152,7 +152,7 @@ The following uses a single KV store as an example to describe how to implement
1. Declare the ID of the distributed KV store to create.
2. Disable the auto synchronization function (**autoSync:false**) to facilitate subsequent verification of the synchronization function. If synchronization is required, call the **sync()** interface.
```js
try {
const options = {
......@@ -179,7 +179,7 @@ The following uses a single KV store as an example to describe how to implement
```
5. Subscribe to changes of distributed data.
```js
try {
kvStore.on('dataChange', distributedKVStore.SubscribeType.SUBSCRIBE_TYPE_ALL, (data) => {
......@@ -195,7 +195,7 @@ The following uses a single KV store as an example to describe how to implement
1. Construct the key and value to be written to the single KV store.
2. Write KV pairs to the single KV store.
```js
const KEY_TEST_STRING_ELEMENT = 'key_test_string';
const VALUE_TEST_STRING_ELEMENT = 'value_test_string';
......@@ -217,7 +217,7 @@ The following uses a single KV store as an example to describe how to implement
1. Construct the key to be queried from the single KV store.
2. Query data from the single KV store.
```js
const KEY_TEST_STRING_ELEMENT = 'key_test_string';
const VALUE_TEST_STRING_ELEMENT = 'value_test_string';
......@@ -249,7 +249,7 @@ The following uses a single KV store as an example to describe how to implement
>
> If manual synchronization is used, **deviceIds** is obtained by using [devManager.getTrustedDeviceListSync](../reference/apis/js-apis-device-manager.md#gettrusteddevicelistsync). The APIs of the **deviceManager** module are all system interfaces and available only to system applications.
```js
import deviceManager from '@ohos.distributedHardware.deviceManager';
......
en/application-dev/database/data-sync-of-rdb-store.md
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......@@ -3,7 +3,7 @@
## When to Use
When creating a data table, you can set the table to support cross-device access. You can also use APIs to move the data to be accessed across devices to a distributed data.
You can synchronize the application data in a local RDB store on a device to other divices that form a Super Device.
## Basic Concepts
......@@ -51,14 +51,14 @@ When data is added, deleted, or modified, a notification is sent to the subscrib
The following table lists the APIs for cross-device data synchronization of RDB stores. Most of the APIs are executed asynchronously, using a callback or promise to return the result. The following table uses the callback-based APIs as an example. For more information about the APIs, see [RDB Store](../reference/apis/js-apis-data-relationalStore.md).
| API| Description|
| API| Description|
| -------- | -------- |
| setDistributedTables(tables: Array<string>, callback: AsyncCallback<void>): void | Sets the distributed tables to be synchronized.|
| sync(mode: SyncMode, predicates: RdbPredicates, callback: AsyncCallback<Array<[string, number]>>): void | Synchronizes data across devices.|
| on(event: 'dataChange', type: SubscribeType, observer: Callback<Array<string>>): void | Subscribes to changes in the distributed data.|
| off(event:'dataChange', type: SubscribeType, observer: Callback<Array<string>>): void | Unsubscribe from changes in the distributed data.|
| obtainDistributedTableName(device: string, table: string, callback: AsyncCallback<string>): void; | Obtains the table name on the specified device based on the local table name.|
| remoteQuery(device: string, table: string, predicates: RdbPredicates, columns: Array<string> , callback: AsyncCallback<ResultSet>): void | Queries data from the RDB store of a remote device based on specified conditions.|
| setDistributedTables(tables: Array<string>, callback: AsyncCallback<void>): void | Sets the distributed tables to be synchronized.|
| sync(mode: SyncMode, predicates: RdbPredicates, callback: AsyncCallback<Array<[string, number]>>): void | Synchronizes data across devices.|
| on(event: 'dataChange', type: SubscribeType, observer: Callback<Array<string>>): void | Subscribes to changes in the distributed data.|
| off(event:'dataChange', type: SubscribeType, observer: Callback<Array<string>>): void | Unsubscribe from changes in the distributed data.|
| obtainDistributedTableName(device: string, table: string, callback: AsyncCallback<string>): void; | Obtains the table name on the specified device based on the local table name.|
| remoteQuery(device: string, table: string, predicates: RdbPredicates, columns: Array<string> , callback: AsyncCallback<ResultSet>): void | Queries data from the RDB store of a remote device based on specified conditions.|
## How to Develop
......@@ -68,7 +68,7 @@ The following table lists the APIs for cross-device data synchronization of RDB
> The data on a device can be synchronized only to the devices whose data security labels are not higher than the security level of the device. For details, see [Access Control Mechanism in Cross-Device Synchronization](sync-app-data-across-devices-overview.md#access-control-mechanism-in-cross-device-synchronization).
1. Import the module.
```js
import relationalStore from '@ohos.data.relationalStore';
```
......@@ -79,7 +79,7 @@ The following table lists the APIs for cross-device data synchronization of RDB
2. Display a dialog box to ask authorization from the user when the application is started for the first time. For details, see [Requesting User Authorization](../security/accesstoken-guidelines.md#requesting-user-authorization).
3. Create an RDB store and set a table for distributed synchronization.
```js
const STORE_CONFIG = {
name: 'RdbTest.db', // Database file name.
......@@ -95,7 +95,7 @@ The following table lists the APIs for cross-device data synchronization of RDB
```
4. Synchronize data across devices. After **sync()** is called to trigger a synchronization, data is synchronized from the local device to all other devices on the network.
```js
// Construct the predicate object for synchronizing the distributed table.
let predicates = new relationalStore.RdbPredicates('EMPLOYEE');
......@@ -114,7 +114,7 @@ The following table lists the APIs for cross-device data synchronization of RDB
```
5. Subscribe to changes in the distributed data. The data synchronization triggers the **observer** callback registered in **on()**. The input parameter of the callback is the ID of the device whose data changes.
```js
let observer = function storeObserver(devices) {
for (let i = 0; i < devices.length; i++) {
......@@ -144,7 +144,7 @@ The following table lists the APIs for cross-device data synchronization of RDB
>
> **deviceIds** is obtained by using [devManager.getTrustedDeviceListSync](../reference/apis/js-apis-device-manager.md#gettrusteddevicelistsync). The APIs of the **deviceManager** module are all system interfaces and available only to system applications.
```js
// Obtain device IDs.
import deviceManager from '@ohos.distributedHardware.deviceManager';
......
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