Re: deductive databases

"Alfredo Novoa" <alfredo_novoa_at_hotmail.com> wrote in message news:i8s681h5vi6oq1da8oei2qobp147d17upg_at_4ax.com...
> On 12 May 2005 06:59:18 -0700, "-CELKO-" <jcelko212_at_earthlink.net>
> wrote:

>>Standard SQL has the SQL/PSM and CTE (Common Table Expressions), so we
>>are computationally complete. But the truth is that most commercial
>>users do not need recursion to do a payroll, keep an inventory, etc.
>
> I disagree, most commercial users would need recursion to solve the
> part explosion problems of most inventory systems.

What you need in theory to solve problems in practice, and what you need in practice to solve problems in practice, are two entirely different things.

You're just disagreeable because your POV is heavily bound to the pedagogy of Date et al which attempts to reduce current practice to a data-centric model conceived in response to the technological environment of the 1970's.

Pete Brown
Falls Creek
Oz
www.mountainman.com.au Received on Fri May 13 2005 - 08:42:17 CEST