Shashi Shekhar, an authority on spatial databases, is a professor and the head of the Spatial Database Research Group in the Department of Computer Science at the University of Minnesota. Shashi has published numerous articles and has advised many organizations on spatial database issues. He holds a Ph.D. degree in Computer Science from the University of California, Berkeley.
Sanjay Chawla is a Senior Technical Instructor with Vignette Corporation in Waltham, Massachusetts. He holds a Ph.D. degree from the University of Tennessee.