This volume comprises papers from the following ?ve workshops that were part of the complete program for the International Conference on Extending Database Technology (EDBT) held in Heraklion, Greece, March 2004: ICDE/EDBT Joint Ph. D. Workshop (PhD) Database Technologies for Handling XML-information on the Web (DataX) Pervasive Information Management (PIM) Peer-to-Peer Computing and Databases (P2P&DB) Clustering Information Over the Web (ClustWeb) Together, the ?ve workshops featured 61 high-quality papers selected from appr- imately 180 submissions. It was, therefore, dif?cult to decide on...