One Country One User

One Country One User
database-memes, database-design-memes, unique-constraint-memes, bad-code-memes, schema-design-memes | ProgrammerHumor.io

When your database schema is so optimized that you're using the country field as a unique identifier. Who needs UUIDs when you can just... limit the entire planet to one user per nation?

Someone clearly took "normalization" a bit too literally and decided that countries should have a one-to-one relationship with users. India with 1.4 billion people? Sorry, someone already claimed it. Better luck next reincarnation.

Plot twist: The developer probably used country as a primary key thinking "this will never be a problem" and now they're frantically Googling "how to migrate production database without getting fired."

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