MariaDB
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| Developer(s) | MariaDB Corporation Ab, MariaDB Foundation |
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| Initial release | 22 January 2009 |
| Stable release | 10.1.21 (January 18, 2017) |
| Repository | github |
| Written in | C, C++, Perl, Bash |
| Operating system | Unix, Windows, Solaris, Linux, OS X, BSD |
| Available in | English |
| Type | RDBMS |
| License | GNU General Public License (version 2), GNU Lesser General Public License (for client-libraries) |
| Website | https://mariadb.org/, https://mariadb.com/ |
MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. Development is led by the original developers of MySQL, who forked it due to concerns over its acquisition by Oracle Corporation. Contributors are required to share their copyright with the MariaDB Foundation.
MariaDB intends to maintain high compatibility with MySQL, ensuring a "drop-in" replacement capability with library binary equivalency and exact matching with MySQL APIs and commands. It includes the XtraDB storage engine for replacing InnoDB, as well as a new storage engine, Aria, that intends to be both a transactional and non-transactional engine perhaps even included in future versions of MySQL.
Its lead developer is Michael "Monty" Widenius, one of the founders of MySQL AB and the founder of Monty Program AB. On 16 January 2008, MySQL AB announced that it had agreed to be acquired by Sun Microsystems for approximately $1 billion. The acquisition completed on 26 February 2008. MariaDB is named after Monty's younger daughter Maria, similar to how MySQL is named after his other daughter My.
MariaDB version numbers follow the MySQL's numbering scheme up to version 5.5. Thus, MariaDB 5.5 offers all of the MySQL 5.5 features. There exists a gap in MySQL versions between 5.1 and 5.5, while MariaDB issued 5.2 and 5.3 point releases.
After the 5.5 version, MariaDB developers decided to start a branch numbered 10, as an attempt to make it clear that MariaDB 10.0 will not import all features from MySQL 5.6; however, they might be imported in future versions. Since specific new features have been developed in MariaDB, the developers decided that a major version number change was necessary.
MariaDB's API and protocol are compatible with those used by MySQL, plus some features to support native non-blocking operations and progress reporting. This means that all connectors, libraries and applications which work with MySQL should also work on MariaDB—whether or not they support its native features. On this basis, Fedora developers replaced MySQL with MariaDB in Fedora 19, out of concerns that Oracle was making MySQL a more closed software project.OpenBSD likewise in April 2013 dropped MySQL for MariaDB 5.5.
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