Pete,
My major concern with this schema is that you are limiting implementors
who wish to refine the base DC element types - to restrictions of
strings only.
I can think of many situations where implementors of application
profiles would want to be able to use data types other than 'string
restrictions' - even structured types. That's why the original
elementType definition was so broad.
<element name="elementType" abstract="true">
<complexType mixed="true">
<sequence minOccurs="0" maxOccurs="unbounded">
<any processContents="lax"/>
</sequence>
<attribute ref="xml:lang" use="optional"/>
</complexType>
</element>
regards,
jane
+-----------------------------+-------------------------------------+
| Jane Hunter | Senior Research Scientist |
| DSTC Pty Ltd | Distributed Systems Technology CRC |
| Level 7, GP South | Tel : +61 7 3365 4310 |
| University of Queensland | Fax : +61 7 3365 4311 |
| Queensland 4072, Australia | Email : [log in to unmask] |
+-----------------------------+-------------------------------------+
At 07:20 PM 3/5/2002 +0000, Pete Johnston wrote:
> Stu Weibel said:
>
> > A small group of people working on the next version of the
> > OAI Protocol for Metadata Harvesting (version 2.0) have been
> > investigating the possibility of partitioning the XML schema
> > that the protocol uses to encode simple DC metadata records
> > into two parts. The group includes Pete Johnston, Carl
> > Lagoze, Andy Powell and Herbert Van de Sompel.
>
> [snip]
>
> > The DCMI-specific XML schema is currently available at
> >
> http://www.ukoln.ac.uk/metadata/dcmi/dcxml/xmls/simpledc.xsd
>
> It's come to our attention that although XML Spy accepts this schema as
> valid, and validates instances against it as expected, both XSV
> (2002/01/11) and Xerces C++ 1.6.0 reject the schema. After pursuing this
> issue on xmlschema-dev, I think there _is_ a problem with this version.
> For details see my posting
>
> http://lists.w3.org/Archives/Public/xmlschema-dev/2002Mar/0012.html
>
> And the detailed response from Jeni Tennison
>
> http://lists.w3.org/Archives/Public/xmlschema-dev/2002Mar/0013.html
>
> I've put a new version which incorporates a correction along the lines
> of Jeni's last suggestion at
>
> http://www.ukoln.ac.uk/metadata/dcmi/dcxml/xmls/simpledc20020305.xsd
>
> This version also includes (at Andy Powell's suggestion) DC metadata
> about the schema (in RDF), using the xs:appinfo element.
>
> So, in short, apologies for the error and please refer to this version
> rather than the original cited in Stu's message.
>
> Thanks
>
> Pete
> -------
> Pete Johnston
> Interoperability Research Officer
> UKOLN, University of Bath, Bath BA2 7AY, UK
> tel: +44 (0)1225 383619 fax: +44 (0)1225 386838
> mailto:[log in to unmask]
> http://www.ukoln.ac.uk/ukoln/staff/p.johnston/
|