>
> so an RDF app that doesn't "speak eor" can still obtain _some_ statements
> it might "understand" if it "speaks dc". It can ignore the type = Schema
> statement.
From where you will get the knowledge to understand "URI/Schema" has the meaning
"This is an RDF Schema?"
>
> A more interesting question, maybe (and a variant of one which Andy asked me
> this morning!), is: if these are statements about a resource identified by
> the URI http://purl.org/dc/elements/1.1/, what exactly is that resource we
> are describing here? The namespace? The Dublin Core metadata element set?
> The RDF schema representation of the DCMES? A document which is "at the
> namespace URI"? I'm not sure....!
From the dcmi-namespace policy rec i understand this URI represents ("identifies") the elements/1.1/
XML - namespace. The 15 gadgets definedBy this namespace we all know.
In a formal sense it's irrelevant to what the URI resolves to - the meaning of
the URI is fixed by the namespace rec.
What we put there, is a policy question.
What i find confusing, is the current resolution of
http://purl.org/dc/elements/1.1/ to
http://dublincore.org/2001/08/dces# (i.e. ending / substituted with #)
I think it would be better to keep an ending /. In that case one easily could give a 404 response
to http://purl.org/dc/elements/1.1/murkel and
a good response to http://purl.org/dc/elements/1.1/title.
The URI's for terms "in" a dcmi - namespace are given also by the dcmi-namespace rec.
A rather minimal solution to the question "what do i get" is the xlink namespace http://www.w3.org/1999/xlink
That namespace is particularly interesting:
Try http://www.w3.org/1999/xlink/properties/linkbase/
and http://www.w3.org/1999/xlink/properties/
see also http://www.w3.org/TR/xlink2rdf/
and http://www.openhealth.org/RDDL/rddl.rdfs
It's worth trying
http://www.openhealth.org/RDDL/rddl2rdf.xsl
as well.
It is very easy to confuse people/applications about what is "in" a namespace.
Therefore it should be possible to obtain some
RDF/XML using terms definedBy the RDF Schema namespace, using terms definedBy the dcmi-namespaces, to explain to
RDF based DC applications, what's going on, from the dc web site.
DC applications based on other implementation languages may need different help.
Typically humans are not very pleased of reading code.
Please observe: The xml-schema for xml-schema does NOT reside at the xml-schema namespace URI.
But you can obtain the xml-schema for xml-schema from the w3 web site.
How URI references are assigned to xml-datatypes etc. is explained IN the xml-schema-datatypes rec.
There is no way to even guess on those from the information available at the namespace URI -
There is no particular behaviour enforced by the xml-namespaces rec for a xml-namespace URI
(or as Patrick would say namespace URI's are just notation) -
One can (!) make good use of such a URI -
Cheers
rs
>
> Pete
>
