If you use a script-driven app for your website, any info which both you and the site users create shall be stored in a database - a collection of information, that's structured in cells and tables for simplier and easier reading and writing. The latter is accomplished by employing special software referred to as database management system and one of the most popular ones world-wide is MySQL. A wide range of script apps are created to work with MySQL as it is simple to use, it works perfectly on a website hosting server and it is universal as it can work with well-known web programming languages (Python, Perl, PHP, Java) and on a variety of server Operating Systems (Windows, Linux, UNIX). There are literally thousands of scripts that use MySQL, including very popular ones for example WordPress, Moodle and Joomla.