Re: Does Codd's view of a relational database differ from that ofDate&Darwin? [M.Gittens]
From: paul c <toledobythesea_at_oohay.ac>
Date: Mon, 06 Jun 2005 16:58:13 GMT
Message-ID: <Fg%oe.1587417$8l.1545211_at_pd7tw1no>
>
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> Actually it is one and the same, i.e., null, false, empty set
> ...
Date: Mon, 06 Jun 2005 16:58:13 GMT
Message-ID: <Fg%oe.1587417$8l.1545211_at_pd7tw1no>
Alexandr Savinov wrote:
> paul c schrieb:
>
>> Alexandr Savinov wrote: >> >>> >>> ... If something disappears, if something is deleted then acutally we >>> get null. >> >> >> >> i think we get 'false', according to the CWA.
>
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> Actually it is one and the same, i.e., null, false, empty set
> ...
if they are one and the same then we don't need nulls. we already have boolean true and false.
p Received on Mon Jun 06 2005 - 18:58:13 CEST