Re: TRM - Morbidity has set in, or not?

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Sat, 13 May 2006 07:11:25 GMT
Message-ID: <xEf9g.7082$A26.169575@ursa-nb00s0.nbnet.nb.ca>

paul c wrote:

> HungryLion wrote:
>

>> Frank Hamersley wrote:

>
> Quoting the Alphora man on physical independence doesn't do much to
> disparage fp as much of what everything he writes about is on the
> logical and the rest is about conceptual modelling.

Actually, a better critique would be to note that it is a straw man. Neither Chris nor Fabian has ever, to my knowlege, claimed that TRM was the ultimate answer to physical independence. I have heard one or the other of them call it exciting and remark on things like linearity of cost for joins etc. In that sense, I strongly suspect both Chris and/or Fabian largely agree with Nathan's opinion.

The ultimate answer to physical independence is physical independence itself. ie. the greatest flexibility possible to map a logical model to physical stores.

As for myself, I am in Marshall's camp on the topic of TRM -- I lack the information necessary to evaluate the claims. Received on Sat May 13 2006 - 02:11:25 CDT