(This flow is same on iOS, Android, Web, and Desktop)
Now that you’ve created an integration, you need to grant it access to a database. To keep your information secure, integrations don't have access to any pages or databases in the workspace at first. You must share specific pages with an integration in order for the API to access those pages. To share a database with your integration:
Go to the database page in your workspace. (See our Help Center articles on databases to learn more about databases in Notion.)
Click the **••**on the top right corner of the page.
Scroll to the bottom of the pop-up and click Add connections.
Search for and select your integration in the Search for connections... menu.
Your integration now has permission to show and edit the database.
The reference is made to the official article available at: