Clicking on the MySQL or PostgreSQL icons on the main cPanel screen will allow you to create or work with those types of databases. The interfaces that cPanel uses for both types of databases are remarkably similar and since most hosts only offer MySQL, we will focus on that (noting where the PostgreSQL interface differs from the one for MySQL).
There are four main sections to the MySQL/PostgreSQL cPanel screen (referred to as the database screen from now on). The first section allows you to create and work with the databases themselves. The section below that allows you to create users that will be able to access one or more databases. Next, if your web host permits, you can set up remote access to your databases. Finally, there is a link to phpMyAdmin or phpPgAdmin, web interfaces for advanced work with your databases.