update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/database/Readme-EN.md

@@ -3,12 +3,19 @@
 - Distributed Data Service
   - [Distributed Data Service Overview](database-mdds-overview.md)
   - [Distributed Data Service Development](database-mdds-guidelines.md)
+
 - Relational Database
   - [RDB Overview](database-relational-overview.md)
   - [RDB Development](database-relational-guidelines.md)
+
 - Preferences
   - [Preferences Overview](database-preference-overview.md)
   - [Preferences Development](database-preference-guidelines.md)
+
 - Distributed Data Object
   - [Distributed Data Object Overview](database-distributedobject-overview.md)
   - [Distributed Data Object Development](database-distributedobject-guidelines.md)
+
+- Data Share
+  - [DataShare Overview](database-datashare-overview.md)
+  - [DataShare Development](database-datashare-guidelines.md)

en/application-dev/database/database-datashare-guidelines.md

+# DataShare Development
+The **DataShare** module allows an application to manage its own data and share data with other applications. Currently, data can be shared only between applications on the same device.
+
+## Available APIs
+
+**Table 1** APIs of the data provider
+
+|API|Description|
+|:------|:------|
+|onCreate?(want: Want, callback: AsyncCallback<void>): void|Called to initialize service logic when the data provider application is created, for example, when a database is created.|
+|insert?(uri: string, valueBucket: ValuesBucket, callback: AsyncCallback<number>): void|Inserts data into the database.|
+|update?(uri: string, predicates: DataSharePredicates, valueBucket: ValuesBucket, callback: AsyncCallback<number>): void|Updates data in the database.|
+|query?(uri: string, predicates: DataSharePredicates, columns: Array<string>, callback: AsyncCallback<Object>): void|Queries data from the database.|
+|delete?(uri: string, predicates: DataSharePredicates, callback: AsyncCallback<number>): void|Deletes data from the database.|
+
+For more details, see [DataShareExtensionAbility](../reference/apis/js-apis-application-DataShareExtensionAbility.md).
+
+**Table 2** APIs of the data consumer
+
+| API                                                      | Description                              |
+| :----------------------------------------------------------- | :--------------------------------- |
+| createDataShareHelper(context: Context, uri: string, callback: AsyncCallback<DataShareHelper>): void | Creates a **DataShareHelper** instance.             |
+| insert(uri: string, value: ValuesBucket, callback: AsyncCallback<number>): void | Inserts a single data record into the database.        |
+| update(uri: string, predicates: DataSharePredicates, value: ValuesBucket, callback: AsyncCallback<number>): void | Updates data in the database.          |
+| query(uri: string, predicates: DataSharePredicates, columns: Array<string>, callback: AsyncCallback<DataShareResultSet>): void | Queries data from the database.              |
+| delete(uri: string, predicates: DataSharePredicates, callback: AsyncCallback<number>): void | Deletes one or more data records from the database.|
+
+For more details, see [DataShareHelper](../reference/apis/js-apis-data-dataShare.md).
+
+## When to Use
+
+There are two roles in **DataShare**.
+
+- Data provider: adds, deletes, modifies, and queries data, opens files, and shares data.
+- Data consumer: accesses the data provided by the provider using **DataShareHelper**.
+
+Examples are given below.
+
+### Data Provider Application Development (Only for System Applications)
+
+1. Import the dependencies.
+
+   ```ts
+   import Extension from '@ohos.application.DataShareExtensionAbility'
+   import rdb from '@ohos.data.rdb';
+   import fileIo from '@ohos.fileio'
+   import dataSharePredicates from '@ohos.data.dataSharePredicates'
+   ```
+
+2. Override **DataShareExtensionAbility** APIs based on actual requirements. For example, if the data provider provides only data query, override only the **query()** API.
+
+3. Implement the data provider services. For example, implement data storage of the data provider by using a database, reading and writing files, or accessing the network.
+
+   ```ts
+   let DB_NAME = "DB00.db";
+   let TBL_NAME = "TBL00";
+   let DDL_TBL_CREATE = "CREATE TABLE IF NOT EXISTS "
+   + TBL_NAME
+   + " (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, age INTEGER, isStudent BOOLEAN, Binary BINARY)";
+   
+   let rdbStore;
+   let result;
+   
+   export default class DataShareExtAbility extends Extension {
+       private rdbStore_;
+       
+   	// Override the onCreate() API.
+       onCreate(want, callback) {
+           result = this.context.cacheDir + '/datashare.txt'
+           // Create an RDB.
+           rdb.getRdbStore(this.context, {
+               name: DB_NAME
+           }, 1, function (err, data) {
+               rdbStore = data;
+               rdbStore.executeSql(DDL_TBL_CREATE, [], function (err) {
+                   console.log('DataShareExtAbility onCreate, executeSql done err:' + JSON.stringify(err));
+               });
+               callback();
+           });
+       }
+   
+   	// Override the query() API.
+       query(uri, predicates, columns,  callback) {
+           if (predicates == null || predicates == undefined) {
+               console.info('invalid predicates');
+           }
+           try {
+               rdbStore.query(TBL_NAME, predicates, columns, function (err, resultSet) {
+                   if (resultSet != undefined) {
+                       console.info('resultSet.rowCount: ' + resultSet.rowCount);
+                   }
+                   if (callback != undefined) {
+                       callback(err, resultSet);
+                   }
+               });
+           } catch (err) {
+               console.error('error' + err);
+           }
+       }
+       // Override other APIs as required.
+       // ...
+   };
+   ```
+
+4. Define **DataShareExtensionAbility** in **module.json5**.
+
+   | Field| Description                                                    |
+   | ------------ | ------------------------------------------------------------ |
+   | "name"       | Ability name, corresponding to the **ExtensionAbility** class name derived from **Ability**.        |
+   | "type"       | Ability type. The value is **dataShare**, indicating the development is based on the **datashare** template.|
+   | "uri"        | URI used for communication. It is the unique identifier for the data consumer to connect to the provider.               |
+   | "visible"    | Whether it is visible to other applications. Data sharing is allowed only when the value is **true**.|
+
+   **module.json5 example**
+
+   ```json
+   "extensionAbilities": [
+     {
+       "srcEntrance": "./ets/DataShareExtAbility/DataShareExtAbility.ts",
+       "name": "DataShareExtAbility",
+       "icon": "$media:icon",
+       "description": "$string:description_datashareextability",
+       "type": "dataShare",
+       "uri": "datashare://com.samples.datasharetest.DataShare",
+       "visible": true
+     }
+   ]
+   ```
+
+### Data Consumer Application Development
+
+1. Import the dependencies.
+
+   ```ts
+   import Ability from '@ohos.application.Ability'
+   import dataShare from '@ohos.data.dataShare'
+   import dataSharePredicates from '@ohos.data.dataSharePredicates'
+   ```
+   
+2. Define the URI string for communicating with the data provider.
+
+   ```ts
+   // Different from the URI defined in the module.json5 file, the URI passed in the parameter has an extra slash (/), because there is a DeviceID parameter between the second and the third slash (/).
+   let dseUri = ("datashare:///com.samples.datasharetest.DataShare");
+   ```
+   
+2. Create a **DataShareHelper** instance.
+
+   ```ts
+   let dsHelper;
+   let abilityContext;
+   export default class MainAbility extends Ability {
+   	onWindowStageCreate(windowStage) {
+   		abilityContext = this.context;
+   		dataShare.createDataShareHelper(abilityContext, dseUri, (err,data)=>{
+   			dsHelper = data;
+   		});
+   	}
+   }
+   ```
+   
+3. Use the APIs provided by **DataShareHelper** to access the services provided by the provider, for example, adding, deleting, modifying, and querying data.
+
+   ```ts
+   // Construct a piece of data.
+   var valuesBucket = {"name": "ZhangSan", "age": 21, "isStudent": false, "Binary": new Uint8Array([1,2,3])};
+   var updateBucket = {"name": "LiSi", "age": 18, "isStudent": true, "Binary": new Uint8Array([1,2,3])};
+   let da =  new dataSharePredicates.DataSharePredicates();
+   var valArray =new Array("*");
+   let people = new Array(
+   	{"name": "LiSi", "age": 41, "Binary": ar},
+   	{"name": "WangWu", "age": 21, "Binary": arr},
+   	{"name": "ZhaoLiu", "age": 61, "Binary": arr});
+   // Insert a piece of data.
+   dsHelper.insert(dseUri, valuesBucket, (err,data) => {
+       console.log("dsHelper insert result: " + data);
+   });
+   // Delete data.
+   dsHelper.delete(dseUri, da, (err,data) => {
+       console.log("dsHelper delete result: " + data);
+   });
+   // Update data.
+   dsHelper.update(dseUri, da, updateBucket, (err,data) => {
+       console.log("dsHelper update result: " + data);
+   });
+   // Query data.
+   dsHelper.query(dseUri, da, valArray, (err,data) => {
+       console.log("dsHelper query result: " + data);
+   });
+   ```
+   

en/application-dev/database/database-datashare-overview.md

+# DataShare Overview
+
+## Introduction
+
+The **DataShare** module allows an application to manage its own data and share data with other applications. Currently, data can be shared only between applications on the same device.
+
+Data needs to be shared in a wealth of scenarios. For example, contacts, short message service (SMS), and media gallery always needs to be shared. However, certain data, such as accounts and passwords, cannot be shared. Some data, such as SMS messages, can be queried but not modified by other applications. **DataShare** provides a secure data sharing mechanism for applications in a variety of scenarios.
+
+The data provider can directly use the **DataShare** framework to share data with other applications without complex encapsulation. The data consumer only needs to learn and use a set of interfaces because the data access mode does not vary with the data provisioning mode. This greatly reduces the learning time and development difficulty.
+
+## Basic Concepts
+
+
+Before you get started, familiarize yourself with the following concepts:
+
+
+- Data provider
+
+  An application that provides data and implements related services. It is also called a producer or server.
+
+- Data consumer
+
+  An application that accesses the data or services provided by a data provider. It is also called a client.
+
+- Value bucket (**ValuesBucket**)
+
+  One or more data records stored in the form of key-value (KV) pairs. The keys are of the string type. The values can be of the number, string, Boolean, or Unit8Array type.
+
+- Result set
+  
+  A collection of query results. Flexible data access modes are provided for users to obtain data.
+  
+- Predicate
+  
+  Conditions specified for updating, deleting, or querying data in the database.
+
+## Working Principles
+
+**Figure 1** DataShare mechanism
+
+
+![](figures/en_DataShare.png)
+
+- The **DataShareExtAbility** module, as the data provider, implements data sharing between applications.
+- The **DataShareHelper** module, as the data consumer, provides interfaces for accessing data, including adding, deleting, modifying, and querying data.
+- The data consumer communicates with the data provider using inter-process communication (IPC). The data provider can be implemented through a database or other data storage.
+
+- The **ResultSet** module is implemented through shared memory. Shared memory stores the result sets, and interfaces are provided to traverse result sets.
+
+## Constraints
+
+- **DataShare** is subject to the limitations on the database used by the data provider. For example, the supported data models, length of the keys and values, and maximum number of databases that can be accessed at a time by each application vary with the database in use.
+
+- The payloads of **ValuesBucket**, predicates, and result sets are restricted by IPC.

en/application-dev/reference/apis/js-apis-data-dataSharePredicates.md

 # Data Share Predicates
 
-You can use **DataSharePredicates** to specify conditions for [updating](js-apis-data-dataShare.md#update), [deleting](js-apis-data-dataShare.md#delete), and [querying](js-apis-data-dataShare.md#query) data with **DataShare**.
+You can use **DataSharePredicates** to specify conditions for [updating](js-apis-data-dataShare.md#update), [deleting](js-apis-data-dataShare.md#delete), and [querying](js-apis-data-dataShare.md#query) data when **DataShare** is used to manage data.
 
->**NOTE**
+> **NOTE**
 >
->The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
 ## Modules to Import
@@ -13,11 +13,14 @@ You can use **DataSharePredicates** to specify conditions for [updating](js-apis
 import dataSharePredicates from '@ohos.data.dataSharePredicates';
 ```
 
-## equalTo
+## DataSharePredicates
+Provides methods for setting different **DataSharePredicates** objects.
+
+### equalTo
 
 equalTo(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value equal to the specified value.
+Sets a **DataSharePredicates** object to match the data that is equal to the specified value.
 
 Currently, only the relational database (RDB) and key-value database (KVDB, schema) support this **DataSharePredicates** object.
 
@@ -34,7 +37,7 @@ Currently, only the relational database (RDB) and key-value database (KVDB, sche
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -43,11 +46,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.equalTo("NAME", "Rose")
 ```
 
-## notEqualTo
+### notEqualTo
 
 notEqualTo(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value not equal to the specified value.
+Sets a **DataSharePredicates** object to match the data that is not equal to the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -64,7 +67,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -73,11 +76,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.notEqualTo("NAME", "Rose")
 ```
 
-## beginWrap
+### beginWrap
 
 beginWrap(): DataSharePredicates
 
-Adds a left parenthesis to this **DataSharePredicates**. Currently, only the RDB supports this **DataSharePredicates** object.
+Adds a left parenthesis to this **DataSharePredicates**.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -99,11 +104,13 @@ predicates.equalTo("NAME", "lisi")
     .endWrap()
 ```
 
-## endWrap
+### endWrap
 
 endWrap(): DataSharePredicates
 
-Adds a right parenthesis to this **DataSharePredicates** object. Currently, only the RDB supports this **DataSharePredicates** object.
+Adds a right parenthesis to this **DataSharePredicates** object.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -125,7 +132,7 @@ predicates.equalTo("NAME", "lisi")
     .endWrap()
 ```
 
-## or
+### or
 
 or(): DataSharePredicates
 
@@ -150,7 +157,7 @@ predicates.equalTo("NAME", "lisi")
     .equalTo("NAME", "Rose")
 ```
 
-## and
+### and
 
 and(): DataSharePredicates
 
@@ -175,11 +182,13 @@ predicates.equalTo("NAME", "lisi")
     .equalTo("SALARY", 200.5)
 ```
 
-## contains
+### contains
 
 contains(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the string that contains the specified value. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data that contains the specified value.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -188,13 +197,13 @@ Sets a **DataSharePredicates** object to match the string that contains the spec
 | Name| Type  | Mandatory| Description                |
 | ------ | ------ | ---- | -------------------- |
 | field  | string | Yes  | Column name in the database table.  |
-| value  | string | Yes  | Value contained in the string.|
+| value  | string | Yes  | Value to match.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -203,11 +212,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.contains("NAME", "os")
 ```
 
-## beginsWith
+### beginsWith
 
 beginsWith(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match a string that starts with the specified value. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data that begins with the specified value.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -216,13 +227,13 @@ Sets a **DataSharePredicates** object to match a string that starts with the spe
 | Name| Type  | Mandatory| Description                  |
 | ------ | ------ | ---- | ---------------------- |
 | field  | string | Yes  | Column name in the database table.    |
-| value  | string | Yes  | Start value of the string.|
+| value  | string | Yes  | Start value to match.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -231,11 +242,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.beginsWith("NAME", "os")
 ```
 
-## endsWith
+### endsWith
 
 endsWith(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match a string that ends with the specified value. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data that ends with the specified value.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -244,13 +257,13 @@ Sets a **DataSharePredicates** object to match a string that ends with the speci
 | Name| Type  | Mandatory| Description                  |
 | ------ | ------ | ---- | ---------------------- |
 | field  | string | Yes  | Column name in the database table.    |
-| value  | string | Yes  | End value of the string.|
+| value  | string | Yes  | End value to match.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -259,11 +272,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.endsWith("NAME", "os")
 ```
 
-## isNull
+### isNull
 
 isNull(field: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field whose value is null.
+Sets a **DataSharePredicates** object to match the data whose value is null.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -279,7 +292,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -288,11 +301,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.isNull("NAME")
 ```
 
-## isNotNull
+### isNotNull
 
 isNotNull(field: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field whose value is not null.
+Sets a **DataSharePredicates** object to match the data whose value is not null.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -308,7 +321,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -317,11 +330,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.isNotNull("NAME")
 ```
 
-## like
+### like
 
 like(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match a string that is similar to the specified value.
+Sets a **DataSharePredicates** object to match the data that is similar to the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -338,7 +351,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -347,11 +360,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.like("NAME", "%os%")
 ```
 
-## unlike
+### unlike
 
 unlike(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match a string that is not similar to the specified value.
+Sets a **DataSharePredicates** object to match the data that is not not similar to the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -368,7 +381,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -377,11 +390,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.unlike("NAME", "%os%")
 ```
 
-## glob
+### glob
 
 glob(field: string, value: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the specified string. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the specified string.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -396,7 +411,7 @@ Sets a **DataSharePredicates** object to match the specified string. Currently,
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified string.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -405,11 +420,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.glob("NAME", "?h*g")
 ```
 
-## between
+### between
 
 between(field: string, low: ValueType, high: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value within the specified range. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data that is within the specified range.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -425,7 +442,7 @@ Sets a **DataSharePredicates** object to match the field with data type **ValueT
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -434,11 +451,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.between("AGE", 10, 50)
 ```
 
-## notBetween
+### notBetween
 
 notBetween(field: string, low: ValueType, high: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value out of the specified range. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data that is out of the specified range.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -454,7 +473,7 @@ Sets a **DataSharePredicates** object to match the field with data type **ValueT
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -463,11 +482,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.notBetween("AGE", 10, 50)
 ```
 
-## greaterThan
+### greaterThan
 
 greaterThan(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value greater than the specified value.
+Sets a **DataSharePredicates** object to match the data that is greater than the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -484,7 +503,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -493,11 +512,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.greaterThan("AGE", 10)
 ```
 
-## lessThan
+### lessThan
 
 lessThan(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value less than the specified value.
+Sets a **DataSharePredicates** object to match the data that is less than the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -514,7 +533,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -523,11 +542,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.lessThan("AGE", 50)
 ```
 
-## greaterThanOrEqualTo
+### greaterThanOrEqualTo
 
 greaterThanOrEqualTo(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value greater than or equal to the specified value.
+Sets a **DataSharePredicates** object to match the data that is greater than or equal to the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -544,7 +563,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -553,11 +572,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.greaterThanOrEqualTo("AGE", 10)
 ```
 
-## lessThanOrEqualTo
+### lessThanOrEqualTo
 
 lessThanOrEqualTo(field: string, value: ValueType): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **ValueType** and value less than or equal to the specified value.
+Sets a **DataSharePredicates** object to match the data that is less than or equal to the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -574,7 +593,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -583,11 +602,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.lessThanOrEqualTo("AGE", 50)
 ```
 
-## orderByAsc
+### orderByAsc
 
 orderByAsc(field: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object that sorts the values in a column in ascending order.
+Sets a **DataSharePredicates** object that sorts data in ascending order.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -603,7 +622,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -612,11 +631,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.orderByAsc("AGE")
 ```
 
-## orderByDesc
+### orderByDesc
 
 orderByDesc(field: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object that sorts the values in a column in descending order.
+Sets a **DataSharePredicates** object that sorts data in descending order.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -632,7 +651,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -641,11 +660,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.orderByDesc("AGE")
 ```
 
-## distinct
+### distinct
 
 distinct(): DataSharePredicates
 
-Sets a **DataSharePredicates** object to filter out duplicate records. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to filter out duplicate data records.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -653,7 +674,7 @@ Sets a **DataSharePredicates** object to filter out duplicate records. Currently
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -662,7 +683,7 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.equalTo("NAME", "Rose").distinct()
 ```
 
-## limit
+### limit
 
 limit(total: number, offset: number): DataSharePredicates
 
@@ -683,7 +704,7 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -692,11 +713,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.equalTo("NAME", "Rose").limit(10, 3)
 ```
 
-## groupBy
+### groupBy
 
 groupBy(fields: Array<string>): DataSharePredicates
 
-Sets a **DataSharePredicates** object to group the records according to the specified parameters. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object group the records according to the specified fields.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -704,13 +727,13 @@ Sets a **DataSharePredicates** object to group the records according to the spec
 
 | Name| Type         | Mandatory| Description                |
 | ------ | ------------- | ---- | -------------------- |
-| fields | Array<string> | Yes  | Names of the columns to group.|
+| fields | Array<string> | Yes  | Names of the columns by which the records are grouped.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -719,11 +742,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.groupBy(["AGE", "NAME"])
 ```
 
-## indexedBy
+### indexedBy
 
 indexedBy(field: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to specify the index column. Currently, only the RDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to list data by the specified index.
+
+Currently, only the RDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -737,7 +762,7 @@ Sets a **DataSharePredicates** object to specify the index column. Currently, on
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -746,11 +771,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.indexedBy("SALARY_INDEX")
 ```
 
-## in
+### in
 
 in(field: string, value: Array<ValueType>): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **Array<ValueType>** and value within the specified range.
+Sets a **DataSharePredicates** object to match the data that is within the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -761,13 +786,13 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 | Name | Type            | Mandatory| Description                                   |
 | ------- | ---------------- | ---- | --------------------------------------- |
 | field   | string           | Yes| Column name in the database table.                     |
-| value | Array&lt;[ValueType](js-apis-data-ValuesBucket.md#valuetype)&gt; | Yes  | Array of **ValueType**s to match.|
+| value | Array&lt;[ValueType](js-apis-data-ValuesBucket.md#valuetype)&gt; | Yes  | Array of the values to match.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -776,11 +801,11 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.in("AGE", [18, 20])
 ```
 
-## notIn
+### notIn
 
 notIn(field: string, value: Array&lt;ValueType&gt;): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the field with data type **Array<ValueType>** and value out of the specified range.
+Sets a **DataSharePredicates** object to match the data that is not in the specified value.
 
 Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** object.
 
@@ -791,13 +816,13 @@ Currently, only the RDB and KVDB (schema) support this **DataSharePredicates** o
 | Name | Type            | Mandatory| Description                                   |
 | ------- | ---------------- | ---- | --------------------------------------- |
 | field   | string           | Yes  | Column name in the database table.                     |
-| value | Array&lt;[ValueType](js-apis-data-ValuesBucket.md#valuetype)&gt; | Yes  | Array of **ValueType**s to match.|
+| value | Array&lt;[ValueType](js-apis-data-ValuesBucket.md#valuetype)&gt; | Yes  | Array of the values to match.|
 
 **Return value**
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -806,11 +831,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.notIn("NAME", ["Lisa", "Rose"])
 ```
 
-## prefixKey
+### prefixKey
 
 prefixKey(prefix: string): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match a field with the specified key prefix. Currently, only the KVDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data with the specified key prefix.
+
+Currently, only the KVDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -824,7 +851,7 @@ Sets a **DataSharePredicates** object to match a field with the specified key pr
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**
 
@@ -833,11 +860,13 @@ let predicates = new dataSharePredicates.DataSharePredicates()
 predicates.prefixKey("NAME")
 ```
 
-## inKeys
+### inKeys
 
 inKeys(keys: Array&lt;string&gt;): DataSharePredicates
 
-Sets a **DataSharePredicates** object to match the fields whose keys are within the given range. Currently, only the KVDB supports this **DataSharePredicates** object.
+Sets a **DataSharePredicates** object to match the data whose keys are within the given range.
+
+Currently, only the KVDB supports this **DataSharePredicates** object.
 
 **System capability**: SystemCapability.DistributedDataManager.DataShare.Core
 
@@ -851,7 +880,7 @@ Sets a **DataSharePredicates** object to match the fields whose keys are within
 
 | Type                                       | Description                      |
 | ------------------------------------------- | -------------------------- |
-| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object that matches the specified field.|
+| [DataSharePredicates](#datasharepredicates) | **DataSharePredicates** object created.|
 
 **Example**