[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RDF Question: just need to reference the parent class for domain?

  • From: "Roger L. Costello" <costello@m...>
  • To: xml-dev@i...
  • Date: Tue, 04 May 1999 07:49:36 -0400

domain rdf
Consider this RDF Schema definition:

<?xml version="1.0"?> 
<rdf:RDF xmlns:rdf=?http://www.w3.org/1999/02/22-rdf-syntax-ns#?
                 xmlns:rdfs=?.../PR-rdf-schema-19990303#?>
      <rdfs:Class rdf:ID=?Camera?>
            <rdfs:subClassOf 
                      rdf:resource=?...#Resource?/>
      </rdfs:Class>
      <rdfs:Class rdf:ID=?SLR?>
            <rdfs:subClassOf rdf:resource=?#Camera?/>
      </rdf:Class>
      <rdf:Property ID=?f-stop?>
            <rdfs:domain rdf:resource=?#Camera?/>
            <rdfs:domain rdf:resource=?#SLR?/>
            <rdfs:range rdf:resource=?...#Real?/>
      </rdf:Property>
</rdf:RDF>

Note that SLR is a subClass of Camera.  In the definition of the f-stop
property I indicate what domains the property may be used in - Camera
and SLR.  My question is this: since SLR is a subclass of Camera then
can I omit the second domain property, i.e., just use:

      <rdf:Property ID=?f-stop?>
            <rdfs:domain rdf:resource=?#Camera?/>
            <rdfs:range rdf:resource=?...#Real?/>
      </rdf:Property>

f-stop can be used in any sublasses of Camera and I don't have to
specify all the subclasses that it may be used in.  Correct?  /Roger


xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)


PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.