Re: Proposal: 6NF

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Thu, 05 Oct 2006 12:20:18 GMT
Message-ID: <6M6Vg.656$cz.9617@ursa-nb00s0.nbnet.nb.ca>

David Cressey wrote:

> "David Cressey" <dcressey_at_verizon.net> wrote in message
> news:F4uTg.998$rH1.633_at_trndny05...
>

>>First, let's find out where we all agree,  then work our way towards where
>>there are different viewpoints.
>>
>>Here's a starter:  A schema in DKNF will have no nullable columns.

>
> I got no answers to the first point, but I think we all agree.
>
> Here's the next point.
>
> An outer join between two relational tables will, in general, produce a
> table with nullable columns.
>
> Note: Brian Selzer has carried this point further in another subthread.

You are begging the question. Received on Thu Oct 05 2006 - 07:20:18 CDT