ISO/IEC JTC 1/SC 34N0655

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TITLE: Correspondence to WG3 received 2005-07-18 from Dr. Robert M. Colomb
SOURCE: Dr. Robert M. Colomb
PROJECT: FCD 13250-2: Information Technology - Topic Maps - Data Model
PROJECT EDITOR: Mr. Lars Marius Garshol; Mr. Graham Moore
STATUS: Received correspondence
ACTION: For consideration by project editors
DATE: 2005-07-18
DISTRIBUTION: SC34 and Liaisons

Dr. James David Mason
(ISO/IEC JTC 1/SC 34 Chairman)
Y-12 National Security Complex
Bldg. 9113, M.S. 8208
Oak Ridge, TN 37831-8208 U.S.A.
Telephone: +1 865 574-6973
Facsimile: +1 865 574-1896
Network: [email protected]

Mr. G. Ken Holman
(ISO/IEC JTC 1/SC 34 Secretariat - Standards Council of Canada)
Crane Softwrights Ltd.
Box 266,
Telephone: +1 613 489-0999
Facsimile: +1 613 489-0995
Network: [email protected]

Date: Mon, 18 Jul 2005 15:33:27 +1000
Subject: Question regarding TMDM 2005-07-13
From: Bob Colomb <[email protected]>
To: <[email protected]>

Dear Mr. Holman

I am on the OMG Ontology Development Metamodel working party. The ODM
includes a MOF metamodel for Topic Maps. I have taken over this aspect from
Lewis Hart, formerly of AT&T. His original work was based on the TMDM of
2003-11-05, and I am bringing it up to date with TMDM 2005-07-13.

I have a question regarding scope and type.

Following the figures in TMDM 2005-07-13, it appears that the following
constructs can have both scope and type:

Association (Fig 7)
TopicName (Fig 4)
Occurrence (Fig 6)

The following can have scope but not type

Variant (Fig 5)

The following can have type but not scope

AssociationRole (Figs 7, 8)

And the following can have neither scope nor type


On the other hand, in the text of 5.3.4, first sentence, it says

"All topic characteristics have a scope."

And in 5.3.3, first sentence, it says

"A topic characteristic is a topic name, occurrence or association role ..."

Which together imply that association role can have a scope, making a
conflict with Figures 7 and 8.

Could you please let me know which is correct? I assume you will report this
apparent inconsistency to the committee.

Thanks very much,

Bob Colomb

Dr. Robert M. Colomb
Data and Knowledge Engineering Group
School of Information Technology
  and Electrical Engineering          The most thought-provoking thing about
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