Annotea: location independent references to resources - slide "Chosen solution: URNs + owl:sameAs"

Assign a URN to each resource in a local file

<rdf:Description rdf:about="urn:uid:123-4325-53">

     ...
</rdf:Description>

Moving the file around doesn't break references to the resource
However, the client needs to know where a given URN is found
--> keep the resource in the same bookmkark file, assume the clients knows where are those files

Whenver the URI of the resource changes, record its previous URIs using owl:sameAs

<rdf:Description rdf:about="http://annotea.w3.org/ab213450">
 <owl:sameAs rdf:resource="urn:uid:123-4325-53" / >
     ...

</rdf:Description>