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An Overview of Data Modeling

Nikola Ilic provides an overview of data modeling:

In recent years, I’ve done dozens of training on various data platform topics, for all kinds of audiences. When teaching various data platform concepts and techniques, I find one of the concepts particularly intimidating for many business analysts, especially those who are just starting their journey. And, that is the concept of data modeling.

This is a good introduction and does a particularly good job of explaining why we have logical and physical data models. I have one medium-sized quibble with an otherwise-great article: 3rd Normal Form is nowhere near sufficient for a logical data model, and I’d make the strong case (in fact, I do make that case) that 5th Normal Form should be the standard and that 3NF is an anachronism which you should entirely replace with Boyce-Codd Normal Form.