Using a database class in my user class

Question

In my project I have a database class that I use to handle all the MySQL stuff. It connects to a database, runs queries, catches errors and closes the connection.

Now I

Answer 1

Since you are using the database as an object, why not just add methods to the object that your "users class" can employ to take care of the things it needs to do. The users class can contain a pointer to the database class. The database class will protect your database, and assure that the users class is using it appropriately.