Re: Proposal: 6NF

From: Marshall <marshall.spight_at_gmail.com>
Date: 3 Oct 2006 17:19:01 -0700
Message-ID: <1159921141.166521.98660@m73g2000cwd.googlegroups.com>

Karen Hill wrote:
> David Cressey wrote:
>
>
> Here is an example:
>
> Creating an order in a table for a non-existant customer?
>
> > You either have a systematic way of dealing with missing data, or you deal
> > with missing data in an unsystematic way, when the eventuality happens.
> > Which is worse?
>
> I would rather have a system that would refuse to create an order for a
> non existant customer.

I would expect any systematic approach to enable me to specify what is and is not allowed to be missing.

Marshall Received on Tue Oct 03 2006 - 19:19:01 CDT