RE: PM and CM (Re: [xtm-wg] Simplified requirements)

["Daniel Rivers-Moore" <daniel.rivers-moore@rivcom.com>]

Sam says:
> P.S. This also presumes that the CM is stable. Daniel says he "hopes"
> it is, but...

I think the CM is as stable as any part of the spec ... There have as yet
been no errata identified in the concpetual model, to my knowledge, nor any
major issues requiring consideration of formal revision to it.

Any spec must be subject to review (that was the thrust of my earlier
objection to the statement in the Core Deliverables document of 4 December
that the DTD *would not change* in certain specified ways). However, the
review that occurs after a spec has been formally approved is of a very
different kind from the review that occurred during the development period.

"To err is human - to forgive, divine", they say. I hope we can both err and
forgive. To state that a spec will not change is I think a kind of hubris,
implying either that one is certain there are no errors (which is a perverse
kind of pride) or that any errors discovered will not be corrected (which is
a perverse kind of folly). Having said that, we did all in our power to make
the spec as solid as we could before formally approving it, and any
revisions that may be proposed thereafter will need to be handled in a
rigorous and careful way.

In brief - Yes, the CM is stable. No, it is not eternal and immutable. But
yes, it is absolutely part of the XTM structure, to and from which
appropriate mappings should be made.

Daniel


-----Original Message-----
From: Sam Hunting [mailto:sam_hunting@yahoo.com]
Sent: 23 March 2001 17:30
To: xtm-wg@yahoogroups.com
Subject: Re: PM and CM (Re: [xtm-wg] Simplified requirements)


Since the CM is itself in an informative annex, the mapping should be
in an Informative Annex as well.

S.

P.S. This also presumes that the CM is stable. Daniel says he "hopes"
it is, but...


--- Lars Marius Garshol <larsga@garshol.priv.no> wrote:
>
> * Nikita Ogievetsky
> |
> | I would definitely add the following to the requirements:
> |
> | 8. A clear Mapping of PM to the Conceptual Model should be
> provided.
>
> I forgot this, but I think Nikita is right. This should be in the PM.
>
> --Lars M.
>
>
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