根据用户视图设计数据库

Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications Pub Date : 1990-03-07 DOI:10.1109/PARBSE.1990.77168

G. Pernul, P. Moser, G. Luef

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引用次数: 1

摘要

作者引入了一个概念性的启动模式，它描述了一个关系数据库模式，并包含一组关系模式、一组关系间和关系内依赖关系以及一组用户视图。它显示了如何根据不同对象类型之间的依赖关系、根据属性之间的依赖关系以及根据不同的用户视图将开始模式分解为片段。片段用4NF中的RM/ t关系表示。模型本身通过目录关系进行扩展，以表示关于关系、关系和用户视图的元信息。此外，对如何表示用户视图的语义给出了一些建议。

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Database design according to user views

The authors introduce a conceptual start schema, which describes a relational database schema and contains a set of relational schemata, a set of inter- and intrarelational dependencies, and a set of user views. It is shown how the start schema can be decomposed into fragments according to the dependencies between different object types, according to dependencies between attributes, and according to the different user views. Fragments are represented by RM/T-relations in 4NF. The model itself is extended by catalog relations to represent metainformation about relations, relationships, and user views. Furthermore, some suggestions on how to represent the semantics of user views are given.<>

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Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications

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