A comprehensive walkthrough of database normalization from 1NF through 5NF using a university enrollment example. Covers the motivation for normalization (avoiding insert, update, and delete anomalies), then steps through each normal form: 1NF (atomic values, primary keys), 2NF (full dependency on primary key), 3NF (no transitive dependencies), BCNF (overlapping candidate keys), 4NF (multivalued dependencies), and 5NF (join dependencies). Each step includes practical table restructuring examples and ERD evolution.
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