It is also an electronic-based correspondence system and report generator that can be designed according to the user. SDSS will have two major modules 1) generic display & query module to facilitate display of spatial & nonspatial data, identification of attribute information,
overlays, simple thematic queries etc., 2) analysis module catering to the specific needs pertaining to various phases of emergency management viz., early warning, damage assessment & statistics, risk prediction, evacuation plans & alternate optimal routes, proximity analysis, etc., using geospatial technologies.