RDF storage

currently rdf is storaged in RDBMS or native triples most often, is it possible to store RDF in a native XML database?
  and the arising problems? the most difference betwwen RDF and pure XML is the data model which is hierarchical tree for XML
  and graph for RDF.so if storing RDF in NXD,maybe it is needed to redesign the storage model and also mapping rdf query
  like RQL into XML query language like XQuery.
  It seems that the most appealing thing to store RDF in NXD is that i can utilize the index and other optimizing techniques  to  query it,but i am no very sure about that.Could anybody give me some advice?thanks.

	



 Best regards
 John Song
 Dept. of Computer Science, Tsinghua University
 
 
 2004-05-18