How to organize the service database?

Question

MySQL

Good afternoon!
Help me choose a database and organize work with it, the image is what you need. So that the database does not depend on the resource where it will be located, there must be a global database - for users who have chosen to work through the global database, and there must be a local database on a flash drive, along with the server part of the service itself - for people who work locally.

Answer 1

SQLite