Re: Does Codd's view of a relational database differ from that ofDate&Darwin?[M.Gittens]
From: Jon Heggland <heggland_at_idi.ntnu.no>
Date: Thu, 9 Jun 2005 09:32:19 +0200
Message-ID: <MPG.1d120eed44b917d4989689_at_news.ntnu.no>
Date: Thu, 9 Jun 2005 09:32:19 +0200
Message-ID: <MPG.1d120eed44b917d4989689_at_news.ntnu.no>
In article <42a5d881$1_at_news.fhg.de>, savinov_at_host.com says...
> Assume you have two tables Products =<Price, Size> and Personel = <Age,
> Salary>. Then you have a record in Products r=<$100, big>.
>
> Question: What Age has the record r?
>
> Answer: null.
YMMV.
-- JonReceived on Thu Jun 09 2005 - 09:32:19 CEST