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Re: Issues with the logical consistency of The Third Manifesto

From: Jan Hidders <jan.hidders_at_REMOVETHIS.pandora.be>
Date: Fri, 19 Nov 2004 23:13:38 GMT
Message-ID: <C6vnd.29755$Fv6.1325109@phobos.telenet-ops.be> 





Marshall Spight wrote:


> 

> It's long bugged me that the relational algebra has such seemingly

> non-algebraic things in it as restrict and project.




Could you explain that a little? What do you mean by non-algebraic? And 
why does that bother you? Do you think we can achieve the same with more 
algebraic operators? Did you have any in mind? Could Tarski's 
cylindrical algebras be what you are looking for?




Received on Fri Nov 19 2004 - 17:13:38 CST












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