Re: The Relational Model & Queries That Naturally Return Duplicate Rows
From: Tegiri Nenashi <tegirinenashi_at_gmail.com>
Date: Mon, 11 Oct 2010 08:27:07 -0700 (PDT)
Message-ID: <87617ded-9c6d-4eb5-85ed-c073e43b9cb0_at_c16g2000vbp.googlegroups.com>
Date: Mon, 11 Oct 2010 08:27:07 -0700 (PDT)
Message-ID: <87617ded-9c6d-4eb5-85ed-c073e43b9cb0_at_c16g2000vbp.googlegroups.com>
On Oct 10, 2:35 am, Erwin <e.sm..._at_myonline.be> wrote:
> ...There,
> "bag algebra" is investigated (and its inferiority to relational
> algebra exposed).
It is not that simple. Check up Green et.al. semirings http://www.cis.upenn.edu/~val/EDBTkeynoteLausanne.pdf Received on Mon Oct 11 2010 - 17:27:07 CEST