说明：  MySQL是一个小型关系型数据库管理系统，开发者为瑞典MySQL AB公司。在2008年1月16号被Sun公司收购。目前MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低，尤其是开放源码这一特点，许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。MySQL的官方网站的网址是：www.mysql.com
(MySQL is a small relational database management system, development of the Swedish company MySQL AB. In January 16, 2008 acquired by Sun. MySQL is currently being widely used in Internet, small and medium-sized site. Because of its small size, speed and low total cost of ownership, in particular the characteristics of open source, many small and medium-sized Web sites in order to reduce the total cost of ownership and choose the MySQL database as a Web site. MySQL)