RDF Example

RDF Example

This is a few lines from a CD-list:

This is a few lines of an RDF document:

<?xml version="1.0"?>

<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
xmlns:cd="http://www.recshop.fake/cd#"> 

<rdf:Description
 rdf:about="http://www.recshop.fake/cd/Empire Burlesque">
  <cd:artist>Bob Dylan</cd:artist>
  <cd:country>USA</cd:country>
  <cd:company>Columbia</cd:company>
  <cd:price>10.90</cd:price>
  <cd:year>1985</cd:year>
</rdf:Description>

<rdf:Description
 rdf:about="http://www.recshop.fake/cd/Hide your heart">
  <cd:artist>Bonnie Tyler</cd:artist>
  <cd:country>UK</cd:country>
  <cd:company>CBS Records</cd:company>
  <cd:price>9.90</cd:price>
  <cd:year>1988</cd:year>
</rdf:Description>
.
.
.
</rdf:RDF>   

The first line of the RDF document is the XML declaration. The XML declaration is followed by the root element of RDF documents: <rdf:RDF>.

The xmlns:rdf namespace, specifies that elements with the rdf prefix are from the namespace "http://www.w3.org/1999/02/22-rdf-syntax-ns#".

The xmlns:cd namespace, specifies that elements with the cd prefix are from the namespace "http://www.recshop.fake/cd#".

The <rdf:Description> element contains the description of the resource identified by the rdf:about attribute.

The elements: <cd:artist>, <cd:country>, <cd:company>, etc. are properties of the resource.

RDF Online Validator

W3C's RDF Validation Service is useful when learning RDF. Here you can experiment with RDF files.

The online RDF Validator parses your RDF document, checks your syntax, and generates tabular and graphical views of your RDF document.

Copy and paste the example below into W3C's RDF validator:

<?xml version="1.0"?>

<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
xmlns:si="http://www.recshop.fake/siteinfo#">
  <rdf:Description rdf:about="http://www.w3schools.com/RDF">
    <si:author>Jan Egil Refsnes</si:author>
    <si:homepage>http://www.w3schools.com</si:homepage>
  </rdf:Description>
</rdf:RDF>

When you parse the example above, the result will look something like this.

Have you ever wanted to distribute your dynamic web sites on a CD or DVD?

DWebPro is a stand alone web server developed specifically for distributing dynamic web sites (for example PHP/MySQL, ASP.Net/Ms Access) on CD or DVD without needing to rewrite the web site code. Just imagine the look on your client's face when you:

• Browse their dynamic web sites from a CD/DVD.
• Run to MySQL, PostgreSQL, Firebird and other databases directly from CD/DVD.
• Send their email order directly from the CD/DVD.
• Ship thousands of CDs and DVDs with the cost of a single license.
• Create CDs and DVDs that run on any Windows platform.
• And more...

Download Your Copy of DWebPro, it's "FREE for non commercial use"!

Jump to: Top of Page or HOME or Printer friendly page

W3Schools provides material for training only. We do not warrant the correctness of its contents. The risk from using it lies entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

Copyright 1999-2007 by Refsnes Data. All Rights Reserved.

W3Schools was converted to XHTML in December 1999