Normalization

• Jun 17, 2026
• data-engineering

Database Design: Data Modeling, ERDs, and Normalization

Chapter 5 of Data Engineering for Beginners by Chisom Nwokwu (ISBN 9781394325412) shifts from writing queries to designing the databases those queries run against. And honestly, this might be the most important chapter for long-term data engineering work.

• Feb 18, 2026
• software-engineering

Normalization and Database Design - Data Engineering for Beginners (Ch.5 Part 2)

This is Part 2 of Chapter 5, continuing from data modeling basics.

If Part 1 was about drawing the blueprint, Part 2 is about keeping the building from falling apart. Normalization is one of those topics that sounds academic until you hit a real bug caused by duplicate data. Then it clicks fast.