The steps of database design are right-sized, in virtue of the implement of database modeling,ERwin. It is also implemented the automatic establishment of database with the converse engineering of ERwin and the order set of OSQL.

• 借助数据库建模工具ERwin，将数据库设计步骤进行合理简化，并利用ERwin的逆向工程和OSQL命令集实现了数据库的自动建库。