Re: Primary Key Theory Question

What is a surrogate key and what is a natural key is in the eye of the beholder. There exists a certain context in which SSN is a surrogate key. It's a key issued for the purposes of identification to an object whose natural features are unusable for identification. It's just not invented by "our system."

SSN only looks natural to the IT person because the subject matter expert uses it as if it were natural. Received on Sat Apr 03 2004 - 08:37:05 CST