Re: Interesting article: In the Beginning: An RDBMS history

From: x <x_at_not-exists.org>
Date: Thu, 6 Apr 2006 09:48:24 +0300
Message-ID: <e12djb$ha2$1@emma.aioe.org>

"David Cressey" <dcressey_at_verizon.net> wrote in message news:kCTYf.7149$g81.1159_at_trndny09...
>
> "paul c" <toledobythesea_at_oohay.ac> wrote in message
> news:bsRYf.225411$B94.102419_at_pd7tw3no...
> > x wrote:
>
> > I'm not sure. I thought Codd said that he was using arrays just as a
> > way of explaining the operators.

> I don't think so. I think he was making the distinction between
attributes
> specified by name and attributes specified by position.

What is the difference between a "name" and a "position" from a mathematically point of view ? Received on Thu Apr 06 2006 - 01:48:24 CDT