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+# FAQs
+
+- [File Management Development](faqs-file-management.md)
+
+- [Data Management Development](faqs-data-management.md)
+
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+# Device 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 a **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 from **/data/app/el2/100/database/Bundle name/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
+```
diff --git a/en/application-dev/faqs/faqs-file-management.md b/en/application-dev/faqs/faqs-file-management.md
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+# File Management Development
+
+
+
+## What 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 OpenHarmony [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}`)
+     })
+   }
+   ```