diff --git a/zh-cn/application-dev/database/database-mdds-guidelines.md b/zh-cn/application-dev/database/database-mdds-guidelines.md
index 91a7877ec8ca0870c368ea9211cd4fbf2f85f943..7d5a418246e2d0d7712b6eb6506b90e22afa7d8f 100644
--- a/zh-cn/application-dev/database/database-mdds-guidelines.md
+++ b/zh-cn/application-dev/database/database-mdds-guidelines.md
@@ -68,25 +68,25 @@
     grantPermission();
    
     // Stage模型
-    import Ability from '@ohos.application.Ability';
-   
+    import AbilityStage from '@ohos.application.Ability';
+  
     let context = null;
-   
-    function grantPermission() {
-    class MainAbility extends Ability {
-        onWindowStageCreate(windowStage) {
+  
+    class MainAbility extends AbilityStage {
+      onWindowStageCreate(windowStage) {
         let context = this.context;
-        }
+      }
     }
-   
-    let permissions = ['ohos.permission.DISTRIBUTED_DATASYNC'];
-    context.requestPermissionsFromUser(permissions).then((data) => {
+  
+    function grantPermission() {
+      let permissions = ['ohos.permission.DISTRIBUTED_DATASYNC'];
+      context.requestPermissionsFromUser(permissions).then((data) => {
         console.log('success: ${data}');
-    }).catch((error) => {
+      }).catch((error) => {
         console.log('failed: ${error}');
-    });
+      });
     }
-   
+  
     grantPermission();
     ```