|Initial release||May 23, 1995|
[ (April 26, 2022 ) ±]
|Preview release||±](September 21, 2017 ) [|
|Written in||C, C++|
|Type||Database management software|
|License(s)||GNU General Public License or proprietary EULA|
MySQL is the world's most used relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My. The phrase "SQL" stands for "structured query language."
Open source projects that require a full-featured database management system often use MySQL. Applications which use MySQL databases include: TYPO3, Joomla, WordPress, phpBB, Drupal, and other software built on the LAMP software stack. MySQL is also used in many high-profile, large-scale Web products, including Wikipedia, Google (though not for searches), Facebook, and Twitter.
The free open-source version of MySQL is commonly referred to as the MySQL Community Edition. For commercial use, several paid editions are also available, offering additional functionality.
Michael Widenius and David Axmark first began coding MySQL in 1994 The MySQL development project originally made its source code available under the terms of the GNU General Public License, as well as under a variety of proprietary agreements.
MySQL was owned and sponsored by a single for-profit firm, the Swedish company MySQL AB. Sun Microsystems completed its acquisition of MySQL in February 2008, but Sun was then acquired by Oracle Corporation in 2010. Oracle assured users the open-source community edition would still be actively supported, and "core features will end up in community edition."
Primary features of MySQL Server Community Edition include:
- a broad subset of ANSI SQL 99, as well as extensions
- cross-platform support
- stored procedures
- triggers and cursors
- updatable views
- information schema
- X/Open XA distributed transaction processing (DTP) support
- independent storage engines
- transactions with the InnoDB, and Cluster storage engines; savepoints with InnoDB
- SSL support
- query caching
- sub-SELECTs (i.e. nested SELECTs)
- replication support
- full-text indexing and searching using MyISAM engine
- embedded database library
- partial Unicode support (UTF-8 and UCS-2 encoded strings are limited to the BMP)
- partitioned tables
More about the features of the open-source MySQL Community Edition are available on Oracle's site.
Check the MySQL Reference Manual for help with installation and system requirements for MySQL 5.5.
Additional installation help can be found here.
Videos, screenshots, and other media
Several YouTube sources exist for beginner video tutorials:
Companies using MySQL
Examples of companies that use MySQL include:
ABS Nautical Systems LLC, Alstom, Argonne National Laboratory, BASE: BioArray Software Environment, Bayer, Bio-Rad Laboratories, Cardinal Health, Center for Biological Sequence Analysis, Colgate, Eli Lilly, ENERCON, Finnish National Public Health Institute, Genome Sciences Center (GSC), Institut Curie, Lafarge, Smurfit-Stone, Swisslog, SYNNEX Corporation, Thermo Fisher Scientific, Toyota France and South Africa, UNICEF, UPS, Westone Laboratories, Yamaha
A full directory of MySQL users and case studies can be found at the MySQL website.
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