The MySQL database server is the world's most widely used open source database with the advantages of speed, stability and ease of use.

Most large 3rd party scripts such as Forums, BLogs, Classifieds, Shopping Carts, etc will require a seperate database to run at its best so providing more than one database allows you to make use of more powerful scripting.

Your hosting account control panel (cPanel) allows you to create tables and databases and includes the popular PHP MyAdmin to do specific editing and work on MySQL databases.