MariaDB
- The MYSQL_HOME environment variable must define the MariaDB software installation path.
 - The PATH environment variable must define the access path to database client programs.
 - On UNIX™, LD_LIBRARY_PATH
(or equivalent) must hold the path to 
$MYSQL_HOME/lib. - Make sure the database client locale is properly defined.
 - You can make a connection test with the mysql command line tool.