Re: database design method

From: Lauri Pietarinen <lauri.pietarinen_at_atbusiness.com>
Date: Sat, 16 Nov 2002 01:23:26 +0200
Message-ID: <3DD581EE.AD140AEA_at_atbusiness.com>

Jan Hidders wrote:

[...]

Sorry that this is so abstract, but it takes a lot of time to explain this
properly. If you want to know more:

  Jan Van den Bussche, Dirk Van Gucht, Marc Andries, and Marc Gyssens. On
  the completeness of object-creating query languages (extended abstract). In
  33rd Annual Symposium on Foundations of Computer Science, pages 372-379,
  Pittsburgh, Pennsylvania, 24-27 October 1992. IEEE.

  http://citeseer.nj.nec.com/420972.html

OK, thanks.  I  plodded through the paper, but it was a bit too heavy for me
(my algebra is kinda rusty).  Is this bound to be a serious problem for
normal database users, if such indentifiers are not provided for?

A note on object identifiers:  The "Other Orthogonal" Proscription nr.2
in Manifesto (www.thethirdmanifesto.com) proscribes the use of object id's.
Frankly, I don't know how the term is usually used, say in the context of the
previous article (it was mentioned only once), but while we are on the
subject I would like to point out a presentation by Darwen where
he describes the subtyping scheme of the Manifesto and also makes
(in my opinion) a convincing case against object id's (in the sense
that they are used in the Object Oriented world).

Presentation:  http://www.TheThirdManifesto.com/taamoti.slides.pdf

Also Date's keynote address in this year's VLDB touches on the subject:

 http://www.cs.ust.hk/vldb2002/VLDB2002-proceedings/slides/S01P02slides.pdf

regards,
Lauri Pietarinen
 
 
 
  Received on Sat Nov 16 2002 - 00:23:26 CET