Connect to MySQL Database Server Remotely

This is a generalized, easy guide for the learners.Like, in our video guide on how to Install WordPress on Rackspace Cloud Server (Ubuntu 14 04), one user asked why we have not recommended to use PHPMyAdmin on production server in case of one server setup.
http://thecustomizewindows.com/2014/07/connect-mysql-database-server-remotely/