Synopsis This book deals with the multidimensional aspects of geographical Information System (GIS). Surveying the present status of GIS in India, it discusses at length its basic concepts, geographic database management systems, software and hardware options, datum, projection and coordinate system, decision support system and spatial data infrastructures. Also, the book extends elaborate discussion on GIS application in different fields -relief operations, libraries, museums, public access, real estate, environmental management, banking and insurance, internet mapping, railways, and defence services, to name a few.