conf/vldb/96 Surajit Chaudhuri Kyuseok Shim Optimization of Queries with User-defined Predicates 87-98 1996 VLDB db/conf/vldb/vldb96.html#ChaudhuriS96 http://www.vldb.org/conf/1996/P087.PDF conf/vldb/ChimentiGK89 conf/vldb/ChaudhuriS93 conf/vldb/ChaudhuriS94 ... conf/sigmod/GangulyHK92 conf/sigmod/Hellerstein94 conf/sigmod/HellersteinS93 conf/sigmod/IoannidisK90 conf/vldb/KrishnamurthyBZ86 conf/vldb/KemperMS92 ... conf/sigmod/PiraheshHH92 conf/sigmod/SelingerACLP79 journals/tods/WhangK90