W3C home > Mailing lists > Public > www-rdf-interest@w3.org > March 2004

Re: Turtle terse rdf triple language updates

From: Graham Klyne <GK@ninebynine.org>
Date: Fri, 26 Mar 2004 10:06:52 +0000
Message-Id: <5.1.0.14.2.20040326100315.02f8c5f8@127.0.0.1>
To: Dave Beckett <dave.beckett@bristol.ac.uk>, www-rdf-interest <www-rdf-interest@w3.org>

At 15:26 25/03/04 +0000, Dave Beckett wrote:
>The second was a new feature to make OWL constraints much easier to
>type; the addition of integer literals.  These are non-negative
>decimal integers with an xsd:integer datatype, again matching what
>cwm does for such things. This added another new grammar term
>http://www.ilrt.bris.ac.uk/discovery/2004/01/turtle/#integer

My recollection is that the OWL cardinalities are expressed as 
xsd:nonNegativeInteger values.  It's not clear to me that RDF has a way to 
allow xsd:integer values where these are required, though I think the other 
way would work through datatype subclass membership; e.g.:

    _:x a xsd:nonNegativeInteger .
    xsd:nonNegativeInteger rdfs:subClassOf xsd:integer .
|-
    _:x a xsd:integer .

But not the other way round.

#g


------------
Graham Klyne
For email:
http://www.ninebynine.org/#Contact
Received on Friday, 26 March 2004 05:14:10 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 18 February 2014 13:20:07 UTC