Re: Tool X (was Re: simple question on namespaces.)
At 01:58 PM 12/29/00 -0500, Jonathan Borden wrote: > I'm not sure that anything in this argument is unique to either >namespaces or whether a schema is retrieved by URL. Isn't this simply a >question: given a document how can you define its vocabulary? > >1) look at the DTD indicated by a doctypedef. >2) look at an XML Schema indicated by a schemaLocation URI >3) look at an RDF Schema indicated by a namespace URI. Perhaps, though you left out the possibility someone mentioned here earlier of multiple definitions for a single namespace - the three DTDs for XHTML case, for instance. >Documents conformant to XXX must validate against the DTD locatable by a >DOCTYPE definition. > >-or- > >Documents conformant to YYY must validate against an XSD locatable by the >document element namespace URI. DOCTYPEs and namespaces exist independently (even in contradiction) at present... >Leaving aside the public id FPI and assuming we are talking about a system >identifier (for the purposes of constraining this discussion) each mechanism >provides a single system identifier by which a schema is to be located. Again, that 'single' business is troubling... Simon St.Laurent XML Elements of Style / XML: A Primer, 2nd Ed. XHTML: Migrating Toward XML http://www.simonstl.com - XML essays and books
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