To view the actual tables and data in a database, click the Manage link next to the database name in the table. To see the size of the database, click on its name.
When using Virtualmin Pro, two additional forms are shown below the database list to change the login and password for the MySQL and PostgreSQL users used by this virtual server. This can be useful if you want the database login to be different from the primary administration login, perhaps for security purposes. These should be changed with care, as any PHP scripts (such as those from webapp installers) that have the username or password in their configuration files will not be updated.