A presenation by Nature Publishing Group looking at Oracle's NDM as an RDF store, the last slide:
"NPG and Oracle investigating the suitability of the NDM to store and query
RDF-encoded information
o Storage looks OK
o Can hold directed labelled graphs
o Allows URIs, literals and blank nodes
o Can include provenance information
Querying may need more development:
o Can extract sub-graphs but performance and scalability need to be tested
o RDF/XML import and export would be desirable
o Support for RDFS- and OWL-based inferencing"
Mentions Urchin.
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