Geographic Information System
GIS Presentation
Introduction to GISA Geographic Information System (GIS) is a computerized system for gathering and organizing, managing, analyzing and combining geographically localized information from a variety of sources, and for processing and presenting it, in particular for spatial management purposes. A geographic information system is also a database management system for entering, storing, retrieving, querying, analyzing and displaying localized data.
A geographic information system can also be defined by the questions it answers: Where ? What ? What ? How ? What ? When ? What if ?
A GIS responds to 5 functionalities (the 5 A's)