1 of 73 数据库理论 ATZJG.NET Haifeng Xu

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实体-联系模型(Entity-Relationship Model)
E/R Diagrams
弱实体集(Weak Entity Sets)
将 E/R 图转化为关系


Haifeng Xu


(hfxu@yzu.edu.cn)

This slide is based on Jeffrey D. Ullman's work, which can be download from his website.

参考书 陈晓勇 编著 《MySQL DBA 修炼之道》