I have two databases in mySQL.

The first database is named "onlyMe".
The second database is named "together".

I can access to the databases with ID "root" and password "1111".
at the moment.

Can I make the password of "onlyMe" is "1111", and the password of "together" is "2222".

I like to access to "onlyMe" exclusively, and I like to access to "together" with one of my cooporative potential partners.

Can I make it possible?