He received his Ph.D. in 1995 in Computer Science from Indian Institute of Technology, Delhi, India. He has published more than 120 Journal and conference papers in the areas of mobile computing, sensor networks, security, XML, web data warehousing, and databases in general. He co-authored a book entitled "Web Data Management: A Warehouse Approach" published by Springer-Verlag. He received UMR faculty excellence award in 2007, Japanese Society for Promotion of Science invitational fellowship in 2006, and Air Force Research Lab's visiting faculty fellowship in 2008. He is IEEE Senior Member and a speaker under IEEE Distinguished Visitor program.