We will gradually replace MySQL database with MariaDB database.
According to Wikipedia
MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. It is notable for being led by the original developers of MySQL, who forked it due to concerns over its acquisition by Oracle. 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.
Other Resources
MariaDB official website –
http://www.mariadb.com
Redhat Enterprise Linux 7 ships MariaDB 5.5 instead of MySQL –
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.0_Release_Notes/chap-Red_Hat_Enterprise_Linux-7.0_Release_Notes-Web_Servers_and_Services.html
Compatibility between MySQL and MariaDB –
https://mariadb.com/kb/en/mariadb/mariadb-vs-mysql-compatibility/
MariaDB 10.0 backports the features in MySQL 5.6 –
https://mariadb.com/kb/en/mariadb/what-is-mariadb-100/
MariaDB 10.1 news –
https://mariadb.com/kb/en/mariadb/what-is-mariadb-101/