Samuel DeFazio Jagannathan Srinivasan Database Extensions for Complex Domains 200-202 ICDE96/P200.pdf 1996 ICDE db/conf/icde/icde96.html#DeFazioS96 conf/icde/96 db/conf/icde/DeFazioS96.html conf/sigmod/MattosM95 ... conf/sigir/DeFazioDSSCC95