His current research interests range from database engineering, parallel computer architecture, parallel database processing/data mining, storage system architecture, digital earth, speculative transaction processing, etc. He has published more than 200 journal papers and conference papers. He is serving as an associate editor of several international journals, such as VLDB Journal, DAPD (Distributed and Parallel Database) Journal, New Generation Computing Journal, IEEE Transaction on Knowledge and Data Engineering, and WWW Journal. He served as general co-chair of IEEE ICDE05(Int. Conf. on Data Engineering), a trustee of the Very Large Data Base Foundation, an Asian coordinator of IEEE Technical Committee on Data Engineering, and an advisory board member of ACM SIGMOD. He was awarded the ACM SIGMOD Edgar F. Codd Innovation Award in 2009.