* presentation
 * http://virtuoso.openlinksw.com/whitepapers/relational%20rdf%20views%20mapping.html

xmmm: http://www4.wiwiss.fu-berlin.de/bizer/BerlinSPARQLBenchmark/results/index.html#comparison 

 * TODOs: next steps : virtuoso!
 * try : http://www.mkyong.com/tomcat/tomcat-javalangoutofmemoryerror-permgen-space/ for buiding Ontocat Index & PEREGRINE!!!!