Re: Peter Chen and Charles Bachman
From: Leandro Guimarães Faria Corsetti Dutra <leandro_at_dutra.fastmail.fm>
Date: Wed, 05 May 2004 20:05:49 -0300
Message-ID: <pan.2004.05.05.23.05.47.867707_at_dutra.fastmail.fm>
>
> Well no, relational operators don't fit that mold, but are manipulative
> aspects of the relational model.
Date: Wed, 05 May 2004 20:05:49 -0300
Message-ID: <pan.2004.05.05.23.05.47.867707_at_dutra.fastmail.fm>
Em Wed, 05 May 2004 21:21:47 +0000, D Guntermann escreveu:
> "Leandro Guimarães Faria Corsetti Dutra" <leandro_at_dutra.fastmail.fm>
> wrote in message news:pan.2004.05.05.20.12.58.610354_at_dutra.fastmail.fm...
>> Em Wed, 05 May 2004 19:42:51 +0000, D Guntermann escreveu: >> >> > how about manipulation (behavior) and integrity aspects....those fit >> > into the properties in addition to structure. >> >> Integrity certainly but manipulation? >> >> Well yes, if by manipulation you mean the operators associated with the >> user-defined types.
>
> Well no, relational operators don't fit that mold, but are manipulative
> aspects of the relational model.
Yes, but we were talking here specific logical models, not the general model of data.
-- Leandro Guimarães Faria Corsetti Dutra +55 (11) 5685 2219 Av Sgto Geraldo Santana, 1100 6/71 +55 (11) 5686 9607 04.674-000 São Paulo, SP BRASIL http://br.geocities.com./lgcdutra/Received on Thu May 06 2004 - 01:05:49 CEST