> At least from ORMs I know I can set for example any group of attributes unique...

		a57721 on June 5, 2024 \| parent \| context \| favorite \| on: You'll regret using natural keys > At least from ORMs I know I can set for example any group of attributes unique Just in case, ORMs send DDL statements with uniqueness constraints to the DBMS, they don't do any magic here.