GISs are important for each and every field in the world. They can represent more data rather than in paper based maps. The geographical information is stored in the map as layers in most of the GISs. Each layer represents a particular theme or feature of the map. For and example one layer can be used to represent the roads in a particular area while another layer is used to represent all the lakes in the same area. Yet another could represent all the cities.
GISs help for some of the decision making systems. They can help organizations to manage their tasks in an efficient and effective way while earning profits. In another way , it can offer job opportunities for most of the people. GIS is helping thousands of Organizations around the world. For an example: Archaeology, Agriculture, Banking, Defense and Intelligence, Electric and Gas. Engineering, Health and Human etc.
