He holds a B.Sc. degree in Electrical Engineering and Computer Science from the National Technical University of Athens, and a M.Sc. and a Ph.D. in Computer Science from the University of Maryland (USA). Between 2000 and 2006 he was a Senior Technical Specialist at the Database Research Department of AT&T Labs-Research in Florham Park, New Jersey. His main research areas include large scale data management systems, data warehousing and data mining. He has published more than 80 articles in international conferences and journals and holds 5 U.S patents. He has served on numerous organizing and program committees of international conferences related to data management.