fixed 11f1deb3 from https://gitee.com/Annie_wang/docs/pulls/9925

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

en/device-dev/faqs/Readme-EN.md

@@ -4,6 +4,8 @@
 - [Environment Setup](faqs-environment-setup.md)
 - [Compilation and Building](faqs-building.md)
 - [Burning](faqs-burning.md)
+- [File Management Development](faqs-file-management.md)
+- [Data Management Development](faqs-data-management.md)
 - [Kernel](faqs-kernel.md)
 - [Porting](faqs-porting.md)
 - [Startup](faqs-startup.md)

en/device-dev/faqs/faqs-data-management.md

+# Data Management Development
+
+
+
+## How Do I Save PixelMap Data to a Database?
+
+Applicable to: OpenHarmony SDK 3.2.3.5
+
+You can convert a **PixelMap** into an **ArrayBuffer** and save the **ArrayBuffer** to your database.
+
+Reference: [readPixelsToBuffer](../reference/apis/js-apis-image.md#readpixelstobuffer7-1)
+
+## How Do I Obtain RDB Store Files?
+
+Applicable to: OpenHarmony SDK 3.2.3.5, stage model of API version 9
+
+Run the hdc_std command to copy the .db, .db-shm, and .db-wal files in **/data/app/el2/100/database/*bundleName*/entry/db/**, and then use the SQLite tool to open the files.
+
+Example:
+
+  
+```
+ hdc_std file recv /data/app/el2/100/database/com.xxxx.xxxx/entry/db/test.db ./test.db
+```

en/device-dev/faqs/faqs-file-management.md

+# File Management Development
+
+
+
+## What Should I Do If There is No Return Value or Error Captured After getAlbums Is Called?
+
+Applicable to: OpenHarmony SDK 3.2.5.3, stage model of API version 9
+
+The **ohos.permission.READ_MEDIA** permission is required for calling **getAlbums**, and this permission needs user authorization. For details, see [Application Permission List](../security/permission-list.md).
+
+1. Configure the required permission in the **module.json5** file.
+     
+   ```
+   "requestPermissions": [
+     {
+       "name": "ohos.permission.READ_MEDIA"
+     }
+   ]
+   ```
+
+2. Add the code for user authorization before the **MainAbility.ts -> onWindowStageCreate** page is loaded.
+     
+   ```
+   private requestPermissions() {
+   let permissionList: Array<string> = [
+     "ohos.permission.READ_MEDIA"
+   ];
+   this.context.requestPermissionsFromUser(permissionList)
+     .then(data => {
+       console.info(`request permission data result = ${data.authResults}`)
+     })
+     .catch(err => {
+       console.error(`fail to request permission error:${err}`)
+     })
+   }
+   ```