Re: Can relational alegbra perform bulk operations?
From: paul c <toledobythesea_at_oohay.ac>
Date: Tue, 29 Sep 2009 20:01:27 GMT
Message-ID: <rItwm.47026$PH1.5928_at_edtnps82>
Date: Tue, 29 Sep 2009 20:01:27 GMT
Message-ID: <rItwm.47026$PH1.5928_at_edtnps82>
Tegiri Nenashi wrote:
...
> It is too vague. Algebras, in general, don't care about the structure
> of their elements; relational algebra, in particular, doesn't refer to
> tuples. ...
It might be clearer to say that while the algebra's ops don't refer to tuples, the sets involved certainly do contain tuples and as far as I know, there are no relational ops that can be defined without reference to tuples. Received on Tue Sep 29 2009 - 22:01:27 CEST