Michalis Petropoulos Alin Deutsch Yannis Papakonstantinou CLIDE: interactive query formulation for service oriented architectures. 1119-1121 2007 conf/sigmod/2007 SIGMOD Conference http://doi.acm.org/10.1145/1247480.1247627 db/conf/sigmod/sigmod2007.html#PetropoulosDP07