MySQL is an open source Relational Database Management System(RDMS).
It was introduced in 23May,1995 by MySQLAB, Its an Swedish company.Now,is a subsidiary of Sun Microsystems,.
MySQL is designed in C and C++.
We can download is codes as per rules of GNU(General Public Licence).
It fast,reliable and flexible.It works on many platforms like:Uinux,Linux and Windows.