S. Sudarshan received the Ph.D. from the Univ. of Wisconsin, Madison in 1992. He was a Member of the Technical Staff in the database research group at AT&T Bell Laboratories, from 1992 to 1995, and he has been at the Indian Institute of Technology (IIT), Bombay since 1995. He spent a year on sabbatical at Microsoft Research, USA in 2004-05. Sudarshan's research interests center on database systems, and his current research projects include keyword querying on databases, processing and optimization of complex queries, and database support for securing and testing applications. Sudarshan is a co-author of the widely used textbook, Database System Concepts, 5th Ed., by Silberschatz, Korth and Sudarshan.