ExFed
Migrated to https://programming.dev/u/ExFed
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Cake day: July 10th, 2023
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Migrated to https://programming.dev/u/ExFed
If it’s used as an identifier to link together rows from different tables. Also known as “joining” tables. SSN (with birthdate) is a unique identifier, and so it’s natural to choose as a primary/foreign key.