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Databases Illuminated, 4th Edition
book

Databases Illuminated, 4th Edition

by Catherine M. Ricardo, Susan D. Urban, Karen C. Davis
March 2022
Intermediate to advanced content levelIntermediate to advanced
682 pages
22h 58m
English
Jones & Bartlett Learning
Content preview from Databases Illuminated, 4th Edition

6.5 Normalization Using Candidate Keys

In practice, database designers usually develop an initial logical model for a relational database by mapping an ER diagram or other conceptual model to a set of relations. Designers identify FDs and candidate keys during the conceptual design process. By mapping the ER diagram to a relational model using the standard mapping, the designer creates a relational model that is already well normalized. To complete the relational design process, the designer checks each relation, identifies a set of FDs for it if any exist other than the ones involving candidate keys, and normalizes it further if necessary. A well-developed set of heuristics is used to guide the normalization process based on candidate keys. ...

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Publisher Resources

ISBN: 9781284231595