Few reasons: - Enforce application logic with constraints so you don't have to duplicate it - Use triggers and get access to things like old and new without h

Few reasons: - Enforce application logic with constraints so you don't have to duplicate it - Use triggers and get access to things like old and new without having to create a bunch of transactions - If you have multiple apps sharing a DB, you either keep your business logic consistent across them vs just doing it in the database - You can version your business logic with your schema