Re: 1GB Tables as Classes, or Tables as Types, and all that refuted

From: Ja Lar <ingen_at_mail.her>
Date: Mon, 15 Nov 2004 23:45:32 +0100
Message-ID: <41993195$0$237$edfadb0f_at_dread11.news.tele.dk>


"Jan Hidders" <jan.hidders_at_REMOVETHIS.pandora.be> ...

> Costin Cozianu wrote:

>> In The Third Manifesto, D&D affirm that 'tis a great blunder to equate 
>> "classes" with relations or with relation variables. Some people still 
>> believe that, although the riguorous proof of the drastic consequences 
>> supposed to follow is completely lacking.
>>
>> So here's a direct positive refutation, including with inheritance( well 
>> that maybe later, as it is orthogonal).

> You are so right that it's almost boring. :-) If there had been any real
> logical problems with letting relational variables play the role of types
> then it would have not been possible or very difficult to come up with a
> decent formal data model for that. It wasn't. QED

Your observation is so profound that some may be uncertain if your are sarcastic or blunt.
Are you are referring to the model that allows an attribute to be of a relational type-domain ... Received on Mon Nov 15 2004 - 23:45:32 CET

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