MySQL (officially pronounced as /maɪ ˌɛskjuËˈɛl/ "My S-Q-L", and unofficially as /maɪ ˈsiËkwÉ™l/ "My Sequel") is an open-source relational database management system (RDBMS); in July 2013, it was the world's second most[a] widely used RDBMS, and the most widely used open-source client–server model RDBMS. It is named after co-founder Michael Widenius's daughter, My. The SQL acronym stands for Structured Query Language. The MySQL development project has made its source code available un