Geographic Information Systems (GIS) are computer application programs
that organize and link information in a way that
enables the user to manipulate that information in a useful
way. They typically integrate a database management system
with a graphics display that shows links between different
types of data. For instance, a GIS may show relationships
between geological units, ore deposits, and transportation
networks. GIS allows users to layer information over other
information that is already in the database. A GIS database
allows the storage of information to a particular geographical
area no matter what that information may be. GIS is used
widely in science, industry, business, and government to sort
out the pertinent information for the particular user from the
GIS database.
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