Changing permissions of the database user might be useful if you want to have custom preferences for some databases, for example, to make a database with read-only permissions.
To change your database’s permissions, go to Hosting → Manage → MySQL Databases:
In the section List of Current MySQL Databases And Users, click on ⋮ button in front of the desired database and choose Change Permissions:
By default, MySQL user has all the permissions granted. You can revoke permissions by removing a ✔️ near the specific permission and updating: