On the Move to Meaningful Internet Systems 2007: CoopIS, DOA, ODBASE, GADA, and IS : OTM Confederated International Conferences, CoopIS, DOA, ODBASE, GADA, and IS 2007, Vilamoura, Portugal, November 25-30, 2007, Proceedings, Part I - Robert Meersman, Zahir Tari ((Lecture Notes in Computer Science))