Re: [topicmaps-comment] RE: XML Schema for XTM DTD

* Thomas Bandholtz
| 
| Schema is a little more powerful than DTD in this field, but not
| powerful enough. OWL would help some steps further. 

Constraining topic map instances is the role that TMCL is expected to
fulfill. There is definitely some overlap with OWL there, but OWL
can't be used for topic maps without "help" in some form. (My London
paper will show one approach to doing it.)

As you say, neither DTDs nor XSDL are powerful enough.

| Finally, it's not so much a question of the formal language. If
| one's subjects are "meaningless", then the whole topic map will be
| too, and no engine will be able to detect it :-)

True, but having a schema language helps, at least. :)

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Lars Marius Garshol, Ontopian         <URL: http://www.ontopia.net >
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