Re: identity columns
From: --CELKO-- <71062.1056_at_compuserve.com>
Date: 9 Jan 2002 10:26:14 -0800
Message-ID: <c0d87ec0.0201091026.68b33772_at_posting.google.com>
Date: 9 Jan 2002 10:26:14 -0800
Message-ID: <c0d87ec0.0201091026.68b33772_at_posting.google.com>
>> If you insist on a true natural key then get your employees to
specify the place and time of their birth. Getting the time to a
precision of 1 second and the latitude, longitude and altitude to a
precision of ~1ft should guarantee
uniqueness. <<
That one does not work unless you have insanely good precision in both time and space. They did a study of Astrology looking at hospital in New York City. The number of people born each day with EXACTLY the same horoscope was quite high. An orthodox Jewish hospital is in the same area as a public hospital that services a poor Latino neightborhood, etc. Received on Wed Jan 09 2002 - 19:26:14 CET