March 2022
Intermediate to advanced
682 pages
22h 58m
English
Content preview from Databases Illuminated, 4th Edition
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6.1 Objectives of Normalization
The basic objective of logical modeling is to develop a description of the data, its relationships, and its constraints. For the relational model, this means we must identify a suitable set of relations. However, the task of choosing the relations is a difficult one because there are many options for the designer to consider. This chapter explains some methods of improving logical design. The techniques presented here are based on a large body of research into the logical design process generally called normalization. When a schema is normalized, each relation has a theme, relaying facts about a single subject, which can either be an entity or a relationship. Each cell of the table contains a single fact about ...
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