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Database Design for Mere Mortals: 25th Anniversary Edition, 4th Edition
book

Database Design for Mere Mortals: 25th Anniversary Edition, 4th Edition

by Michael J. Hernandez
December 2020
Beginner content levelBeginner
640 pages
14h 45m
English
Addison-Wesley Professional
Content preview from Database Design for Mere Mortals: 25th Anniversary Edition, 4th Edition
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Field Specifications

It has long been an axiom of mine that the little things are infinitely the most important.

—SHERLOCK HOLMES,THE ADVENTURES OF SHERLOCK HOLMES

Topics Covered in This Chapter

Why Field Specifications Are Important

Field-Level Integrity

Anatomy of a Field Specification

Using Unique, Generic, and Replica Field Specifications

Defining Field Specifications for Each Field in the Database

Example: Defining Field Specifications

Summary

Review Questions

Fields are the bedrock of the database. They represent characteristics of the subjects that are important to an organization. Fields store the data that the organization uses ...

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Publisher Resources

ISBN: 9780136788133