是对数据库应用技术的一个样本数据库的实例，重在对数据库一些方法的熟悉与掌握，其中包括从数据库的概念模型到ER图的绘制，再到数据库模式的建立（即为数据库及其基本表的建立），而后数据的录入（在此从略）-Is a database application technology, examples of a sample database, focusing on the database some ways familiar with the master, including the conceptual model from the database to the ER mapping and then to the establishment of the database model (which is the database and its basic form the establishment of), then data entry (in this omitted)