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   Re: RDF not conforming to the Namespace spec?

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  • From: John Cowan <cowan@locke.ccil.org>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Thu, 11 Mar 1999 14:00:33 -0500

Richard L. Goerwitz wrote:

> Okay, so your agent is reading the document.  It runs into an element
> in another RDF namespace.  You want to use that namespace's URI component
> to read in additional schema information.
> Two problems:  1) namespace URIs don't necessarily point to schemas, and
> 2) if they did, you'd be extending the schema mechanism in a way that's
> incompatible with DTDs, as they're normally defined and understood.

RDF namespace declarations *may* (and even perhaps should) point to
RDF schemas, which are not XML schemas at all.  They declare
RDF classes and properties, not XML elements and attributes.

Both RDF statements and RDF schemas are normally represented in XML,
but other representations (graphical) also exist.

John Cowan	http://www.ccil.org/~cowan		cowan@ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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