SQL stands for Structured Query Language. SQL is a international standard in querying and retrieving information from databases. MySQL is essentially an SQL server - it responds to requests for information that are written in SQL. You can communicate with MySQL using a wide variety of programming languages (PHP being one of the most common). MySQL is Open Source software and generally free for use.
Refer to the following links for more information about MySQL:
MySQL FAQ - a good place to start.
MySQL and PHP tutorial - a good introduction to using the two Open Source technologies together.
To create a MySQL database:
Click on the Add/Remove MySQL Databases link in the Domain Menu area.
Enter the name of the database in the MySQL Database field.
Click on the Create MySQL database button. Click on the MySQL databases link to return to the MySQL databases window to confirm that it has been created.
Topics:
Creating a MySQL user
Grant a user's permissions to a MySQL database
Adding host access
Removing a user's permissions
Removing a user
Removing a database