On Feb 25, 2019, at 10:26 AM, Ted Roche <[email protected]> wrote: > > There's a couple of issues with using SSNs. > > Technically, they are not unique. Several people have received duplicate > numbers, so they're not ideal primary keys.
They are presumably being used as PKs for tables representing humans, no? Then the vast majority of potential records would have null values, since most humans are not citizens of the USA. -- Ed Leafe _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[email protected] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
