I covered user permissions in MySQL and PostgreSQL.

One thing to note about SQLite is that permissions management, using GRANT and REVOKE, is not available.

It’s not available because it’s not possible.

The reason is that an SQLite database is self-contained in a single file.

This is due to the SQLite architecture.

Anything with access to SQLite file can access anything inside the database.

There is no way to give permissions at the database level.

If your application needs to implement user permissions, you can do so at an application level, for example in your API server, but it’s up to you.

If your app must need user permissions, you could also reconsider your DBMS choice and prefer PostgreSQL of MySQL/MariaDB instead.