Re: DAML+OIL (March 2001) released

Mike Dean wrote:
> A new language version, DAML+OIL (March 2001), available at
> [1], has been released by the Joint Committee [2].  The
> major new features are support for XML Schema data types and
> improved documentation.  Please direct feedback to
> www-rdf-logic@w3.org.
>
> Mike Dean
> Chair, Joint US/EU ad hoc Agent Markup Language Committee
>

I think it is a good idea to try and integrate XML Schema datatypes with
RDF. The problem is that you've used the wrong namespace for XML Schema:

in particular from http://www.daml.org/2001/03/daml+oil-ex-dt.xsd

<xsd:schema xmlns:xsd ="http://www.w3.org/2000/10/XMLSchema#">

this.. umm... looks like an XML Schema but isn't. The XML Schema namespace
does not end with a '#'. There are no two ways about this, the W3C XML
namespace recommendation states that namespace names are to be compared by
literal string comparison and something as simple as a single character
difference makes the namespaces different.

Yep, the fact that the XML Schema namespace URI ends in a 'a' rather than a
'#' causes a problem integrating RDF and XML Schema datatypes, but doing
what you are doing just glosses over the problem.


-Jonathan

Received on Wednesday, 28 March 2001 19:39:30 UTC