Geographic Information Systems (GIS) are computer based information systems that integrate spatial or mappable data with conventional text data.
One can think of a GIS as a two dimensional Google earth map. Where Google earth allows you to zoom in and out and pan around, a GIS additionally allows users to select a feature on the map and in return will be provided with any information in the database associated with that feature.
GIS is joined by other spatially based software applications that are collectively referred to as geomatics or geotechnologies. These include applications in the field of Remote Sensing and Global Positioning Systems.
GIS is an excellent job-market differentiator for