Re: Constraints and Functional Dependencies
From: paul c <toledobythesea_at_oohay.ac>
Date: Sun, 25 Feb 2007 18:31:54 GMT
Message-ID: <uCkEh.1135954$5R2.741171_at_pd7urf3no>
> ... I sometimes wonder whether an alternative concept or two,
> such as a variation on D&D's GROUP/UNGROUP operators might allow
> definition of keys without rename or your prime operator. ...
Date: Sun, 25 Feb 2007 18:31:54 GMT
Message-ID: <uCkEh.1135954$5R2.741171_at_pd7urf3no>
paul c wrote:
> Marshall wrote:
>
>> ... >> Hmmm. Can we express keyness otherwise? I can't think how. >> ...
> ... I sometimes wonder whether an alternative concept or two,
> such as a variation on D&D's GROUP/UNGROUP operators might allow
> definition of keys without rename or your prime operator. ...
p Received on Sun Feb 25 2007 - 19:31:54 CET