Enhanced Data Models for Geographic Information Systems

Abstract

 Geographic Information Systems (GIS) are becoming essential tools 
for analyzing and geographically transferring the information 
about the world. GIS incorporates, both spatial and non spatial 
data, and has the capability for searches, overlays, association and 
display output in 2D/3D incorporating non spatial data. In 
addition to spatial data a GIS systems contain geo referenced 
information which enables near true representation of geography 
and capability to provide measurements, variations etc. These 
features make the technology different from the CAD systems and 
conventional database applications. The capabilities of GIS have 
brought a paradigm shift in the approach to the presentation of 
information.