MySQL is a database. Think of a database like a spreadsheet where you can make relationships between the different sheets of the workbook. These sheets are called "tables", and you'll link the tables together by making a certain field present in both. MySQL is used in websites to make them dynamic. MySQL is the world's most widely used open source database. The MySQL development project has made its source code available under the terms of the GNU General Public License. MySQL is a popular choice of database for use in web applications, and is a central component of the widely used LAMP (Linux Apache MySQL PHP) open source web application software stack. My favorite way to interface and manage PHP is through the software PHPMyAdmin. This software provides you a web application that you can manage any part of your database.