ISO/IEC JTC 1/SC34 N0027
ISO/IEC JTC 1/SC34
Information Technology ---
Document Description and Processing Languages
TITLE: |
Liaison Report: ISO TC184/SC4, The STEP Family of Standards |
SOURCE: |
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PROJECT: |
All SC34 projects |
PROJECT EDITOR: |
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STATUS: |
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ACTION: |
For information |
DATE: |
13 November 1998 |
DISTRIBUTION: |
SC34 and Liaisons |
REFER TO: |
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REPLY TO: |
Dr. James David Mason
(ISO/IEC JTC1/SC34 Chairman)
Lockheed Martin Energy Systems Information Management Services 1060
Commerce Park, M.S. 6480 Oak Ridge, TN 37831-6480 U.S.A. Telephone:
+1 423 574-6973 Facsimile: +1 423 574-0004 Network: masonjd@ornl.gov http://www.ornl.gov/sgml/wg4/ ftp://ftp.ornl.gov/pub/sgml/wg4/ |
Liaison Report
TC184/SC4 met in June in Bad Aibling, Germany and again in October in
Beijing, China. The STEP and SGML effort progressed significantly. In addition,
a new work item for the development of an XML/SGML representation of STEP
interchange files was approved and work started. The following things have been
accomplished:
- An EXPRESS model of the SGML property set was developed to a reasonable
degree of completeness.
- An EXPRESS model of the HyTime property grove was developed, reflecting the
location addressing and hyperlinking modules.
- A preliminary property set template and generation algorithm for creating
groves from repositories of STEP-driven data was developed.
- At the Bad Aibling meeting, a session of demonstrations showing the use of
XML to represent STEP data was held.
- A set of requirements for input to the XML Schema effort was developed of
the XML representation of STEP data new work item and forwarded to the W3C for
consideration.
Other STEP activities of potential interest include:
- Work continues on a new part of the STEP standard, EXPRESS-X, which is a
mapping language defined to define the mapping between both schemas and data
instances. This language bears many similarities to the transformation language
of DSSSL. There may be some interesting synergies between these two standards,
at least in the area of sharing ideas and requirements, if not in the area of
literal cooperation.
- A second edition of the EXPRESS language is being developed. This edition
adds a number of useful features, including a behavior description model. It may
also include features that would make the STEP representation of named node
lists more direct.
In general, interest in the STEP and SGML effort seems to be positive and
sustained. We have gotten significant support from the SC4 leadership. We have
developed productive working relationships with other working groups.
Planned activities:
- The primary work items continue to be developed and refined. Our goal is to
have them firm enough by the next STEP meeting in January 1999 to enable the
creation of non-trivial demonstrations.
- Our goal is to develop demonstration implementations for presentation at
the June, 1999 STEP meeting. We may have some of these demonstrations available
for the April XML conference in Granada, Spain.
- We will work on documenting and formalizing our work products. We are not
yet clear on what standardized form, if any, these different work products
should take or what standardization group would be most appropriate.
Upcoming actions:
- Next TC184/SC4 meeting is in January in San Francisco.
Additional information: http://www.nist.gov/sc4.