conf/sigmod/98 Stefano Ceri Piero Fraternali Stefano Paraboschi The IDEA Web Lab. 587-589 1998 conf/sigmod/98 SIGMOD Conference db/conf/sigmod/sigmod98.html#CeriFP98 http://doi.acm.org/10.1145/276304.276390 SIGMOD98/P587.PDF journals/jiis/BaralisCFP96 ... conf/dood/CeriFPP97