Hi Steve /all We took that syntax straight from Roger's RDF/TCS examples. I think Roger was going to do more work on tidying up those sorts of loose ends. I have to admit that my knowledge of RDF and particularly RDFS is pretty superficial We can switch to either the shorter format or the safer fully qualified URI - what do people think would be better? Sally
By the way, the IPNI example you cite has an error:
<tn:nomenclaturalCode rdf:resource="&tn;#botanical" />
Many RDF/XML parsers will see &tn; as an entity which cannot be resolved. Since I don't have a copy of the ontology (and http://tdwg.org/2006/03/12/TaxonNames does not resolve), I can only take a guess that it should look something like:
<tn:nomenclaturalCode rdf:resource="tn:botanical" />
However, using XML namespace prefixes in resource references inside RDF/XML documents tends to cause problems because not all RDF/XML parsers are smart enough to dereference the namespace prefix and build a fully-qualified resource URI. A safer form of the above would be the fully qualified resource URI which looks like:
<tn:nomenclaturalCode rdf:resource="http://tdwg.org/2006/03/12/TaxonNames/botanical" />
-Steve
*** Sally Hinchcliffe *** Computer section, Royal Botanic Gardens, Kew *** tel: +44 (0)20 8332 5708 *** S.Hinchcliffe@rbgkew.org.uk