运用实体——联系模型数据建模

USING ENTITY-DELATIONSHIP MODEL TO IMPLEMENT DATA MODELING

数据建模是建立用户数据视图的模型过程。它是开放有效的数据库应用的最重要任务 ,而实体—联系模型 ( E—R模型 )是用来解释用户数据并使之文档化的工具 ,本文通过一个实例探讨了运用 E— R模型数据建模。

Data modeling is a process that creates model of user views,it is the most important tasle of opening workable Database applications.the E-R model is a tool for understanding and documenting the structure of users′ data.in this paper,we discussed how to use the E-R model for implementing Data modeling.