Chapter 8. Keys
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A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes. |
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| --CLAUDE BERNARD | ||
Topics Covered in This Chapter
Why Keys Are Important
Establishing Keys for Each Table
Table-Level Integrity
Reviewing the Initial Table Structures
Case Study
Summary
Review Questions
By now you've identified all the subjects that the database will track and defined the table structures that will represent those subjects. Furthermore, you've put the structures through a screening process to control their makeup and quality. In this next stage of the database-design process, you'll begin the task of assigning keys to each table. You'll soon learn that there are different ...
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