Namespaces: a key in peer-to-peer architecture (cont.)

We can use an XML namespace to unambiguously identify the Dublin Core vocabulary just pointing to the Dublin Core resources defining its semantics.
An example:
  <rdf:Description about="">
        D-Lib Program - Research in Digital Libraries
        The D-Lib program supports the community of people
          with research interests in digital libraries and 
          electronic publishing
          Corporation For National Research Initiatives
        <rdf:li>Research; statistical methods</rdf:li>
        <rdf:li>Education, research, related topics</rdf:li>
        <rdf:li>Library use Studies</rdf:li>
    <dc:Type>World Wide Web Home Page</dc:Type>
       Well known and often referenced site