GEOGRAPHICAL INFORMATION SYSTEM
(GIS):-
1. Object modeling and geodatabase
1.1.1.1 Modeling objects with GIS :
The purpose of a geographic information system(GIS) is to provide a spatial framework to support decision for the intelligent use of earth’s resources and to manage the man-made environment.
Most often, a GIS presents information in the form of maps and symbols . Looking at a map gives you the knowledge of where things are, what they are, how can they be reached by means of roads or other transport, and what things are adjacent and near by. A (GIS) can also disseminate information through an interactive session with a map on a personal computer. This interaction reveals information that is not apparent on a printed map.
For example one can query all known attributes of a feature, create a list of all things connected from one point on a network to another and perform simulation to gauge qualities such as water flow travel time, or dispersion of pollutants.
The way you choose to display and analyze information depend upon how you model geographic object from the world.
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