Wenfei Fan is the (Chair) Professor of Web Data Management in the School of Informatics, University of Edinburgh, UK. He is a Fellow of the Royal Society of Edinburgh, UK, a National Professor of the 1000-Talent Program, and a Yangtze River Scholar, China. He received his Ph.D. from the University of Pennsylvania, U.S.A., and his M.S .and B.S. from Peking University, China. He is a recipient of the Alberto O. Mendelzon Test-of-Time Award of ACM PODS 2010, the Best Paper Award for VLDB 2010, the Roger Needham Award in 2008 (UK), the Best Paper Award for IEEE ICDE 2007, the Outstanding Overseas Young Scholar Award in 2003 (China), the Best Paper of the Year Award for Computer Networks in 2002, and the Career Award in 2001 (USA). His current research interests include database theory and systems, in particular data quality, data integration, database security, distributed query processing, query languages, social network analysis, Web services, and XML. Floris Geerts is Research Professorin the Department of Mathematics and Computer Science, University of Antwerp, Belgium. Before that, he held a senior research fellow position in the database group at the University of Edinburgh, UK and a postdoctoral research position in the data mining group at the University of Helsinki, Finland. He received his Ph.D. in 2001 from the University of Hasselt, Belgium. His research interests include the theory and practice of databases and the study of data quality, in particular. He is a recipient of the Best Paper Awards for IEEE ICDM 2001 and IEEE ICDE 2007.

• Data Quality: An Overview.- Conditional Dependencies.- Cleaning Data with Conditional Dependencies.- Data Deduplication.- Information Completeness.- Data Currency.- Interactions between Data Quality Issues.

Wenfei Fan is the (Chair) Professor of Web Data Management in the School of Informatics, University of Edinburgh, UK. He is a Fellow of the Royal Society of Edinburgh, UK, a National Professor of the 1000-Talent Program, and a Yangtze River Scholar, China. He received his Ph.D. from the University of Pennsylvania, U.S.A., and his M.S .and B.S. from Peking University, China. He is a recipient of the Alberto O. Mendelzon Test-of-Time Award of ACM PODS 2010, the Best Paper Award for VLDB 2010, the Roger Needham Award in 2008 (UK), the Best Paper Award for IEEE ICDE 2007, the Outstanding Overseas Young Scholar Award in 2003 (China), the Best Paper of the Year Award for Computer Networks in 2002, and the Career Award in 2001 (USA). His current research interests include database theory and systems, in particular data quality, data integration, database security, distributed query processing, query languages, social network analysis, Web services, and XML. Floris Geerts is Research Professorin the Department of Mathematics and Computer Science, University of Antwerp, Belgium. Before that, he held a senior research fellow position in the database group at the University of Edinburgh, UK and a postdoctoral research position in the data mining group at the University of Helsinki, Finland. He received his Ph.D. in 2001 from the University of Hasselt, Belgium. His research interests include the theory and practice of databases and the study of data quality, in particular. He is a recipient of the Best Paper Awards for IEEE ICDM 2001 and IEEE ICDE 2007.

• Data Quality: An Overview.- Conditional Dependencies.- Cleaning Data with Conditional Dependencies.- Data Deduplication.- Information Completeness.- Data Currency.- Interactions between Data Quality Issues.