Re: NULLs
From: Marshall <marshall.spight_at_gmail.com>
Date: Thu, 27 Dec 2007 18:51:59 -0800 (PST)
Message-ID: <5da2b639-555f-4214-9660-1fa446552ef3_at_d4g2000prg.googlegroups.com>
Date: Thu, 27 Dec 2007 18:51:59 -0800 (PST)
Message-ID: <5da2b639-555f-4214-9660-1fa446552ef3_at_d4g2000prg.googlegroups.com>
On Dec 27, 3:31 pm, Hugo Kornelis
<h..._at_perFact.REMOVETHIS.info.INVALID> wrote:
> On Wed, 26 Dec 2007 23:17:52 -0400, Bob Badour wrote:
>
> Attempting to store both the age and the reason why an age is unknown in
> a single column violates first normal form.
Attempting to store both the age and whether the age is known in a single column etc. etc.
Marshall Received on Fri Dec 28 2007 - 03:51:59 CET