Lack of expressive data model understanding leads to poor schema design

Development teams unfamiliar with expressive data modeling often fail to apply important constraints like foreign keys, instead relying on familiar application-level patterns. This results in databases without essential integrity constraints.

Sources

• https://www.compilenrun.com/docs/database/postgresql/postgresql-best-practices/postgresql-common-pitfalls/
• https://www.youtube.com/watch?v=2DvjMyZ1fdo

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