MySql基本语句描述，MySql是一个种关联数据库管理系统，所谓关联数据库就是将数据保存在不同的表中，而不是将所有数据放在一个大的仓库中。这样就增加了速度与提高了灵活性。-MySql basic statement descr iption, MySql is a kind of connection database management system, the so-called associated data stored in the database is different in the table, not all the data in a large warehouse. This increases the speed and improve the flexibility.