MariaDB is a community-developed branch of the MySQL relational database management system, the impetus being the community maintenance of its free status under the GNU GPL, as opposed to any uncertainty of MySQL license status under its current ownership by Oracle.
The contributors are required to share their copyright with Monty Program AB.
Fedora will have a truly open-source MySQL implementation and won't depend on what Oracle decides to do with MySQL in the future. Compared to MySQL, MariaDB is faster in some cases, it includes some new engines and features, while the existing engines and features are enhanced and still compatible.
Replace MySQL with MariaDB
Replace MySQL on markmail
MariaDB is a drop-in replacement for MySQL