conf/vldb/97 Roy Goldman Jennifer Widom DataGuides: Enabling Query Formulation and Optimization in Semistructured Databases. 436-445 1997 VLDB db/conf/vldb/vldb97.html#GoldmanW97 http://www.vldb.org/conf/1997/P436.PDF conf/sigmod/AgrawalGS90 journals/jodl/AbiteboulQMWW97 conf/icdt/BunemanDFS97 conf/sigmod/BunemanDHS96 conf/dbpl/BunemanDS95 journals/tkde/BertinoK89 books/mk/Cattell93 conf/vldb/ChawatheCY94 conf/vldb/CareyHMW96 ... ... books/aw/HopcroftU79 journals/is/KemperM92 conf/vldb/KonopnickiS95 journals/sigmod/McHughAGQW97 conf/eds/MotroDT88 conf/icde/NestorovUWC97 conf/icde/PapakonstantinouGW95 conf/vldb/StonebrakerK82 journals/ibmsj/Zloof77