Current Trends in Database Technology - EDBT 2004 Workshops : EDBT 2004 Workshops PhD, DataX, PIM, P2P&DB, and ClustWeb, Heraklion, Crete, Greece, March 14-18, 2004, Revised Selected Papers - Wolfgang Lindner, Marco Mesiti, Can Türker, Yannis Tzitzikas, Athena I. Vakali ((Lecture Notes in Computer Science))