June 2010
Intermediate to advanced
328 pages
7h 51m
English
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Legitimate Uses of the Antipattern
Sometimes you’re forced to use a database brand that doesn’t support foreign key constraints (for example MySQL’s MyISAM storage engine or SQLite prior to version 3.6.19). If that’s the case, then you have to find a way to compensate, like the quality control scripts described in this chapter’s story.
There are also some ultra-flexible database designs where foreign keys can’t model the relationships. It should be a strong clue that you’re using another SQL antipattern if you can’t use traditional referential integrity constraints. For more detail, you may want to look at Chapter 6, Entity-Attribute-Value and Chapter 7, Polymorphic Associations.
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