Using RDF in XML documents

["Morcom, Harvey" <Harvey.Morcom@KPMG.co.uk>]

I want to add document metadata, based on the Dublin Core, to a number of XML files. The initial proposal was to include a <DocumentProperties> element which would contain child elements similar to that shown below:
<Document>
	<DocumentProperties>
		<Title>RDF Test File</Title>
		<Created>2003-09-01</Created>
	</DocumentProperties>
	<Section>
		etc....

However, after scanning the web I came across numerous articles relating to RDF at which point I decided to add the document metadata using RDF statements, but I am unsure how to include this in the XML files. Do I just replace the <DocumentProperties> element with the <RDF> element as the first child of the root-element? i.e.
<Document>
	<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; xmlns:dc="http://purl.org/dc/elements/1.0/";>
	  <rdf:Description rdf:about="RDF Test File">
	    <dc:title> RDF Test File </dc:title>
	    <dc:creator> John Smith </dc:creator>
	    <dc:date> 2003-09-01 </dc:date>
	  </rdf:Description>
	</rdf:RDF>
	<Section>
	etc....

I assume I would then need to add the RDF vocabulary to my XML Schema in order for the XML file to be valid?

Finally, how does the RDF Schema fit in?

Thanks in advance
Harvey

> Harvey Morcom
> Knowledge Analyst
> harvey.morcom@kpmg.co.uk
> Tel: 782 8695 (020 7694 8695)
> 


		Email Disclaimer

This email has been sent from KPMG LLP, a UK limited
liability partnership, or from one of the companies within
its control (which include KPMG Audit Plc , KPMG United
Kingdom Plc and KPMG UK Limited). The information in
this email is confidential and may be legally privileged.
It is intended solely for the addressee.  Access to this
email by anyone else is unauthorised. If you are not the
intended recipient, any disclosure, copying, distribution
or any action taken or omitted to be taken in reliance on it,
 is prohibited and may be unlawful.  When addressed to
our clients any opinions or advice contained in this email
are subject to the terms and conditions expressed in the
governing KPMG client engagement letter.