A geographic information system provides the means to organize,
analyze, and display spatial information, data that are associated
with specific geographic locations. GIS technology integrates database
operations such as query and statistical analysis with geographic
analysis, modeling, and display capabilities.
GIS analyses range from simple queries of what is where, to sophisticated
models used for basic research, management, and planning. GIS can
couple fundamental scientific and social process models. Results
can be displayed as maps or images with overlays of diverse kinds
of information. GIS technology is rapidly changing and proving valuable
to address diverse problems in virtually every discipline.