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.
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页码：294 / 306
页数：13
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