| securityLevel | [SecurityLevel](#securitylevel) | Yes | Security level of the RDB store. |
| securityLevel | [SecurityLevel](#securitylevel) | Yes | Security level of the RDB store. |
| encrypt | boolean | No | Whether to encrypt the RDB store.<br>The value **true** means to encrypt the RDB store; the value **false** (default) means the opposite.|
| encrypt | boolean | No | Whether to encrypt the RDB store.<br>The value **true** means to encrypt the RDB store; the value **false** (default) means the opposite.|
| dataGroupId<sup>10+</sup> | string | No| Application group ID, which needs to be obtained from the AppGallery.<br>**Model restriction**: This attribute can be used only in the stage model.<br>This parameter is supported since API version 10. It specifies the **relationalStore** instance created in the sandbox directory corresponding to the **dataGroupId**. If this parameter is not specified, the **relationalStore** instance is created in the sandbox directory of the application.|
| dataGroupId<sup>10+</sup> | string | No| Application group ID, which needs to be obtained from the AppGallery.<br>**Model restriction**: This attribute can be used only in the stage model.<br>This parameter is supported since API version 10. It specifies the **relationalStore** instance created in the sandbox directory corresponding to the **dataGroupId**. If this parameter is not specified, the **relationalStore** instance is created in the sandbox directory of the application.|