MYSQL

MySQL is a relational database management system which has more than 11 million installations. The program runs as a server providing multi-user access to a number of databases.

MySQL is popular for web applications and acts as the database component of the LAMP, BAMP, MAMP, SAMP, and WAMP platforms (Linux/BSD/Mac/(Open)Solaris/Windows-Apache-MySQL-PHP/Perl/Python), and for open-source bug tracking tools like Bugzilla. Its popularity for use with web applications is closely tied to the popularity of PHP, which is often combined with MySQL. Several high-traffic web sites (including Flickr, Facebook[6][7], Wikipedia, Google, Nokia and YouTube) use MySQL for its data storage and logging of user data.