Sergio Greco is a full professor and chair of the Department of Electronics, Computer and System Science at the University of Calabria (Italy). He was an assistant professor (1988-1998) and associate professor (1998-2000) at the University of Calabria, as well as a visiting researcher at the Microelectronics and Computer Corporation of Austin (1990-1991) and at the of University of California at Los Angeles (1996, and again in 1998). Currently he is an Associate Editor of the IEEE Transaction of Knowledge and Data Engineering Journal. Professor Greco's research interests include database theory, data integration, inconsistent data, data mining, knowledge representation, logic programming, and computational logic. Cristian Molinaro received a Ph.D. degree in Computer Science Engineering from the University of Calabria, Italy. He was a Visiting Scholar at the Department of Computer Science and Engineering of the State University of New York at Buffalo. From 2009-2011, he was a Faculty Research Assistant at the University of Maryland Institute for Advanced Computer Studies. Currently, he is an Assistant Professor at the University of Calabria, Italy. His research interests include inconsistency and incompleteness management, logic programming, and social network analysis. Francesca Spezzano received a Ph.D. in Computer Science Engineering from the University of Calabria, Italy in 2012. She was a Visiting Scholar at the Computer Science Department (Database Group) of the University of California at Santa Cruz from October 2010-July 2011. Currently, she is a Post-Doc Researcher at the University of Calabria, Italy. Her research interests include dataexchange, inconsistent databases, and logic programming.