This system used E-R chart method to design in order to minimum data redundancy and optimize data consistency and reduce updating abnormity.
本系统采用E - R图法进行规范化设计使得数据冗余最小，数据一致性好，更新异常问题不易发生。
User flow chart, use-case diagram, total model management view, physical configurement view and E-R diagram of database model are set up.
系统总体模型管理视图、各子系统的物理配置视图； 数据库模型E-R 图。
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