Anti-Normalization

Aikesheng Open Source Community

Aug 18, 2021 · Databases

Anti‑Normalization in MySQL: Reducing Joins with Redundant Columns

The article explains the drawbacks of strict relational normalization, introduces the concept of anti‑normalization (controlled redundancy) to simplify queries, demonstrates it with a set of employee, department, salary tables and four typical query scenarios, and shows how denormalizing the schema can dramatically improve MySQL query performance.