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Re: Perhaps an idiotic question

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Thu, 30 Nov 2006 20:48:55 GMT
Message-ID: <XsHbh.26964$cz.407651@ursa-nb00s0.nbnet.nb.ca>


Gene Wirchenko wrote:

> paul c <toledobythesea_at_oohay.ac> wrote:
>
>

>>But it perplexes me even though I admit I have no good reason for asking:
>>
>>If I declare a relation (or more properly a relvar) R to have an 
>>attribute A where A's type is the type of R am I declaring a fallacy or 
>>something that is logically possible (ignoring whether it has any use)?

>
> I see recursion but no termination.
>
> What *is* the use of such a declaration?
What would be the type of a view that combines a recursion or closure with the GROUP operation?
Received on Thu Nov 30 2006 - 14:48:55 CST

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