Changqing Li is currently a Postdoctoral Associate in Duke University, U.S.A. He received his Ph.D. Degree in Computer Science from National University of Singapore, and Master Degree from Peking University. Dr. Li has been working on XML query and update processing, and text processing and search. He has published 20 papers. He is an editor of this book, and his publications also appear in top international database journals and conferences. Particularly his paper was one of the two candidates for the Best Student Paper Award in a top international database conference ICDE'06. Dr. Li was a member of the Program Committees of International Conferences CIKM, DEXA, and KDIR. He was also a reviewer of journals and conferences TKDE, ACM SIGMOD, VLDB, ICDE, WWW, ACM GIS, etc
Tok Wang Ling is a professor of the Department of Computer Science at National University of Singapore. His research interests include Data Modeling, ER approach, Normalization Theory, and Semistructured Data Model and XML query processing. He published over 190 papers, co-authored a book and co-edited 9 conference proceedings. He organized and served as Conference Co-chair of 8 conferences including SIGMOD'2007 and VLDB'2010. He served as PC Co-chair of 5 conferences including ER'2003. He served on the PC of more than 130 database conferences. He is a steering committee member of ER Conference. He was an Advisor of the steering committee of DASFAA, chair and vice chair of the steering committee of ER and DASFAA conference, a steering committee member of DOOD and HSI. He is an editor of 5 journals including Data & Knowledge Engineering. He is a senior member of ACM, IEEE, and Singapore Computer Society.