Geographic Information System
Geographic Information System (GIS) is a computer based tool for mapping and analyzing spatial data. GIS technology integrates common database operations such as query and statistical analysis with the unique visualization and geographic analysis benefits offered by maps. These abilities distinguish GIS from other information systems and make it valuable to a wide range of public and private enterprises for explaining events, predicting outcomes, and planning strategies.
Many have characterized GIS as one of the most powerful of all information technologies because it focuses on integrating knowledge from multiple sources (for example, as layers within a map) and creates a crosscutting environment for collaboration.
Map making and geographic analysis are not new, but a GIS performs these tasks better and faster than do the old manual methods.GIS can be regarded as the high‐tech equivalent of the map.