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@dutra.fastmail.fm>

Em Wed, 05 May 2004 21:21:47 +0000, D Guntermann escreveu:

> "Leandro GuimarÃ£es 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.

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Av Sgto Geraldo Santana, 1100 6/71               +55 (11) 5686 9607
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Received on Wed May 05 2004 - 18:05:49 CDT