[W3C] DCD = Document Content Description.

I Find Karma (adam@cs.caltech.edu)
Tue, 11 Aug 1998 06:37:11 -0700

Two recent RDF-related W3C notes I have been trying to consume...

You know, at some point it's going to be very difficult to keep the
intricacies of all of the components in the suite of Web technologies
coherently organized in my head...

1. (August 4) -- A note discussing the relationship between RDF-schema
and Unified Modeling Language (UML), the generic industry standard
object-oriented framework for information systems modeling:


The note claims that the RDF-Schema model itself is equivalent to a
subset of the class model in UML; I'll have to think about this one.
Instead of a proof of this, there is an outline of the steps needed to
demonstrate that class schema representations using RDF-Schema and the
class model subset of UML are equivalent.

I'm also unclear on the implication. That some systems modeled using
UML can be automatically converted to RDF-Schema?

2. (July 31) -- A note describing the Document Content Description
(DCD), a schema facility for specifying constraint rules applicable to
the structure and content of XML documents:


DCD is an RDF vocabulary that incorporates some of XML-Data and some
basic data types. The note says DCD is intended to define document
constraints in an XML syntax; these constraints may be used in the same
fashion as traditional XML DTDs.


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her, love her, stroke her, tease her, comfort her, protect her, hug her,
hold her, spend money on her, wine & dine her, buy things for her,
listen to her, care for her, stand by her, support her, go to the ends
of the earth for her....

HOW TO IMPRESS A MAN: Show up naked.