RDF Example

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# RDF Example

This is a few lines from a CD-list:

Title | Artist | Country | Company | Price | Year
--- | --- | --- | --- | --- | ---
Empire Burlesque | Bob Dylan | USA | Columbia | 10.90 | 1985
Hide your heart | Bonnie Tyler | UK | CBS Records | 9.90 | 1988
... |  |  |  |  |

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.

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