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Re: Lucid statement of the MV vs RM position?

From: paul c <toledobythesea_at_oohay.ac>
Date: Thu, 04 May 2006 17:05:55 GMT
Message-ID: <Tvq6g.123889$WI1.29699@pd7tw2no> 





Jon Heggland wrote:


> paul c wrote:

> 


>>...
>>(group and ungroup seem to always imply a key, possibly a
>>different one from the input relvar's key and this seemed a little
>>chicken and egg to me). 




> 

> 

> I don't understand this.

> ...




Maybe I should have said that group always seems to imply an additional 
FD in the result and ungroup always seems to imply the removal of one in 
  the result?



p
Received on Thu May 04 2006 - 12:05:55 CDT












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