June 2010
Intermediate to advanced
328 pages
7h 51m
English
Content preview from SQL Antipatterns
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What Is Normalization?
The following are the objectives of normalization:
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To represent facts about the real world in a way that we can understand
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To reduce storing facts redundantly and to prevent anomalous or inconsistent data
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To support integrity constraints
Figure 21. Progression of normal forms
Notice that improving database performance is not on this list. Normalization helps us store data correctly and avoid getting into trouble. It’s practically inevitable that a database that is not normalized becomes a mess. We find ourselves developing a lot more code to clean up inconsistent or duplicate data. We experience delays and expenses to our ...
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