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RE: U.S. Federal Goverment's Data Reference Model (DRM) XML Sc
I'm interested in how you tackle the problem of translating
from business object definitions into message definitions. I'm working with an
organization that has designed schemas to represent its (many hundreds of)
business objects, and is now struggling with the question of how to design
messages for application data interchange that are based on these object
definitions. The problem is that messages exchange information about a business
object, and different messages exchange different subsets of the information.
Making all the information mandatory and thereby forcing the sending application
to populate the message with data that the recipient doesn't want to know seems
unproductive; equally, making all the data optional seems to defeat the purpose
of validation. So it seems that one needs a message definition (=type) for each
message that is somehow related to the schema for the business object, but isn't
related to it by one of the recognized mechanisms of restriction and extension.
It needs some kind of concept of being "derived by
Any thoughts or advice?
The XML Cover
pages just announced the availability of a draft XML schema for the U.S.
Federal Goverment's Data Reference Model (DRM) initiative. I am posting this
here to invite comments from the broad XML community as to our approaches for
this initiative. A specification for the DRM XML Schema is at  (includes
all elements/attributes, their definition, and hyperlinks for efficient
I presented on
this schema at last week's First Quarterly DRM Public Forum along with Mike
Daconta (U.S. Department of Homeland Security Metadata Program Manager), who
is leading this vast interagency effort. We discussed the design factors that
we took into account regarding the schema, use of existing open standards, and
If you have
comments or questions, please feel free to (a) submit them per the
instructions in , (b) express them directly to me, or (c) express them here
on the XML-DEV listserv.
DRM XML Schema)
(DRM XML Schema
Booz Allen Hamilton
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