Re: Can relational alegbra perform bulk operations?
From: Tegiri Nenashi <tegirinenashi_at_gmail.com>
Date: Tue, 29 Sep 2009 16:11:16 -0700 (PDT)
Message-ID: <1f9da6f8-ac26-493b-bc10-cb564e929edf_at_h13g2000yqk.googlegroups.com>
Date: Tue, 29 Sep 2009 16:11:16 -0700 (PDT)
Message-ID: <1f9da6f8-ac26-493b-bc10-cb564e929edf_at_h13g2000yqk.googlegroups.com>
On Sep 29, 3:27 pm, Banana <Ban..._at_Republic.com> wrote:
> Just to validate that I've understood your point which I'm not sure I
> did. Projection need not refer to the tuples because we can just present
> an expression of attribute and the pi symbol. (But wouldn't one still
> have to look at the original value to arrive at the resulting value + pi?)
>
This is no different from saying that in order to add numbers the addition operation has to look inside the number structure (that is decimal representation). Received on Wed Sep 30 2009 - 01:11:16 CEST