# mysql51 The MySQL(TM) software delivers a very fast, multi-threaded, multi-user, and robust SQL (Structured Query Language) database server. MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. MySQL is a trademark of MySQL AB. The MySQL software has Dual Licensing, which means you can use the MySQL software free of charge under the GNU General Public License (http://www.gnu.org/licenses/). You can also purchase commercial MySQL licenses from MySQL AB if you do not wish to be bound by the terms of the GPL. See the chapter "Licensing and Support" in the manual for further info. The MySQL web site (http://www.mysql.com/) provides the latest news and information about the MySQL software. Also please see the documentation and the manual for more information.