Memory Geographic information systemVersion en ligne The main tool are digital maps par Laura Marcela Guerrero Vera Geocoding generates information for decision making It is based on computers that allow the integration of data. Facilitates the visualization of a map in order to reflect geographical phenomena of any type Connect maps with databases Each record or digital object has an identified position. It is based on computers that allow the manipulation of data. SIG: Model of a part of the reality referred to a system of terrestrial coordinates and constructed to satisfy some concrete information needs