Akiyoshi Matono Toshiyuki Amagasa Masatoshi Yoshikawa Shunsuke Uemura A Path-based Relational RDF Database. 95-103 2005 conf/adc/2005 ADC http://crpit.com/confpapers/CRPITV39Matono.pdf db/conf/adc/adc2005.html#MatonoyAYU05