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Home -> Community -> Usenet -> comp.databases.theory -> Re: Does Codd's view of a relational database differ from that ofDate&Darwin?[M.Gittens]

Re: Does Codd's view of a relational database differ from that ofDate&Darwin?[M.Gittens]

From: Ged Byrne <ged.byrne_at_gmail.com>
Date: 8 Jun 2005 06:00:23 -0700
Message-ID: <1118235623.402079.30690@g43g2000cwa.googlegroups.com> 





Alex,



This all makes sense, but this is not how NULLs work in SQL databases.



NULL behaves the way that you describe UNKNOWN.



The scheme you describe could be implemented using the special values
approah.
Received on Wed Jun 08 2005 - 08:00:23 CDT












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