Beispiele, XML und RDF

von AaronSwartz,  
The Semantic Web In Breadth







  1. XML (eXtensible Markup Language)


    

  1. plain text:
    

    I just got a new cat.
    

    

  2. XML-based markup language:
    

    <sentence>
     <person href="http://aaronsw.com/">I</person> 
just got a new <animal>cat</animal>.
</sentence>
    

    

    

  3. identifying markup elements by xml-namespaces:
    

    <sentence
    xmlns="http://example.org/xml/documents/"
    xmlns:c="http://animals.example.net/xmlns/"
><c:person c:href="http://aaronsw.com/">I</c:person>
just got a new <c:animal>cat</c:animal>.
    </sentence>
    

    



2. RDF (Resource Description Framework)


    

  1. plain text:
    

    I really like Tim Berners-Lee's book "Weaving the Web."
    

    

  2. written as the simplest RDF statement (N-Triples):
    

    <http://aaronsw.com/> 
<http://love.example.org/terms/reallyLikes> 
<http://www.w3.org/People/Berners-Lee/Weaving/>.
    

    

    

  3. XML representation of RDF (RDF/XML):

    <?xml version="1.0"?>
<rdf:RDF
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:love="http://love.example.org/terms/"
>
<rdf:Description rdf:about="http://aaronsw.com/">
<love:reallyLikes rdf:resource="http://www.w3.org/
           People/Berners-Lee/Weaving/" />
</rdf:Description>
</rdf:RDF>
    
    







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        (C) W.Sander-Beuermann, Universität Hannover, RRZN, SuchmaschinenLabor,   SuMa-eV