This Short Guide shows you Step-by-Step How to Install MariaDB Server Stable/Development Release for Linux CentOS 6.2/6.3/6.4 KDE4 i686 Desktop.
The MariaDB Foundation have Predisposed the Repositories for Several Linux Distros and between them is Present also that for Linux CentOS.
Finally, to the article Bottom there is a Link to Guides for How to Getting-Started with MariaDB on Linux.