Normalización de bases de datos

En Wikipedia: en inglés; en español.
En website MySQL
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Kent, William. "A Simple Guide to Five Normal Forms in Relational Database Theory", Communications of the ACM 26 (2), Feb. 1983, pp. 120-125.
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Facts and Fallacies about First Normal Form, by Anith Sen
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Normal Form Definitions and Examples
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3 Normal Forms (3NF) Database Tutorial
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Why Normalization Failed to Become the Ultimate Guide for Database Designers?, by Marin Fotache
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Un libro:
- MySQL Database Design and Optimization - Jon Stephens & Chad Russell.