MySQL is an open-source relational database management system (RDBMS). It is a combination of “My”, the name of co-founder Michael Widenius’s daughter, and “SQL”, the acronym for Structured Query Language. MySQL organizes data into one or more data tables in which data may be related to each other, helping structure the data. It works with an operating system to implement a relational database in a computer’s storage system, manages users, allows for network access, and facilitates testing database integrity and creation of backups. MySQL is written in C and C++ and works on many system platforms, including Linux, macOS, Microsoft Windows, and more. It is used by many database-driven web applications, including Drupal, Joomla, phpBB, and WordPress. MySQL is also used by many popular websites, including Facebook, Flickr, MediaWiki, Twitter, and YouTube.