Chaudhri, A. ; Jeckle, M. ; Rahm, E. ; Unland, R. Web, Web-Services, and Database Systems 2003 Book Futher information: http://link.springer.de/link/service/series/0558/tocs/t2593.htm Abstract Springer-Verlag, Lecture Notes in Computer Science (LNCS) 2593, 2003