HOW TO TREAT DERIVABLE DATA IN THE ENTITY-RELATIONSHIP MODEL

被引：0
|
作者：
RAUH, O
机构：
来源：
WIRTSCHAFTSINFORMATIK | 1992年 / 34卷 / 03期
关键词：
ENTITY-RELATIONSHIP MODEL; DERIVABLE DATA; DERIVABLE RELATIONSHIPS; META RULES; NORMALIZATION; PREDICATE LOGIC; SQL;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The intention of this paper is to show that original and derivable data should be distinguished in ER-modeling. The problems that arise from mixing these two types of data are explained. Then there are made some proposals how derivable data can be added to the ER model.
引用
收藏
页码：294 / 306
页数：13
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