数据库设计入门经典作为一个数据库的入门教程，适合于刚接触数据库的人群来学习，书中由浅入深，循序渐进，讲述了数据库的各种知识。-Database design entry classic As a　of introductory tutorials, suitable for contact with the　to learn the crowd, the book　shallow to deep, step by step, tells the　of various knowledge.