Re: Newbie question
From: Alfredo Novoa <alfredo_novoa_at_hotmail.com>
Date: Wed, 22 Jun 2005 13:38:34 +0200
Message-ID: <ldjib15nf7o5p5fsb27vmekl8hdc88r529_at_4ax.com>
Date: Wed, 22 Jun 2005 13:38:34 +0200
Message-ID: <ldjib15nf7o5p5fsb27vmekl8hdc88r529_at_4ax.com>
On Wed, 22 Jun 2005 09:15:16 +0200, Jon Heggland <heggland_at_idi.ntnu.no> wrote:
>> If you want a natural key for a person try
>> the exact latitude, longitude, altitude and precise time of their birth.
>
>That is an excellent example of the need for surrogate keys. :)
That's why many countries have national document identification numbers.
Regards Received on Wed Jun 22 2005 - 13:38:34 CEST