GEOGRAPHIC INFORMATION SYSTEM. . .  
GIS Course in Islamabad.
Like the field of geography, the term Geographic Information System (GIS) is hard to define. It
represents the integration of many subject areas. Accordingly there us no absolutely agreed upon
definition of a GIS (deMers, 1997). A broadly accepted definition of GIS is the one provided by the
National Centre of Geographic Information and Analysis.
GIS is a system of hardware, software and procedures to facilitate the management, manipulation, analysis,
modelling, representation and display of georeferenced data to solve complex problems regarding planning and
management of resources (NCGIA, 1990.
Functions of GIS include: data entry, data display, data management, information retrieval and
analysis.
GIS Course in Islamabad.