高职院校教材管理系统E-R模型设计

Design of E-R Model for Teaching Material Management System in Higher Vocational Colleges

根据高职院校教材管理系统中的业务需求,提取了业务活动中的核心实体,分析了其属性集及各实体之间的联系,设计了E-R模型(entity-relationship model)图,为系统关系数据库的设计奠定了基础。

According to the requirement analysis of teaching material management of higher vocational colleges,extract all the main entities of the whole business activity from the perspective of E-R model(entity-relationship model),analysis the attributes of each entity and the relationships among all the entities,and design E-R modeling diagrams.