All script applications including forums or e-stores save their info in a database - a group of cells and tables containing the Internet site data including items, prices, comments, etc. Whenever you open a specific page, the script connects to the database and retrieves the specified info, then displays it. The intermediary software that connects the script and the database is referred to as a database management system and amongst the most popular ones is MySQL. The latter is commonly used because it can run on different platforms (Linux, UNIX, Windows) and with a number of scripting languages (Python, Perl, PHP, Java), not mentioning its wonderful functionality even with big databases. Numerous famous platforms such as Joomla™ or WordPress employ MySQL databases to save their content.