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Geographic Information Systems (GIS): [GIS dictionary] GIS is a computer-based tool that analyzes, stores, manipulates and visualizes geographic information on a map. GIS links geographic locations on Earth with attribute information enabling users to visualize patterns, understand relationships and trends.
What are the 2 GIS data models and define their characteristics. (1) Vector data model - has finite boundaries, does not change, discrete/entity; Advantages: has topology, can store multiple feature types Disadvantages: old format, file structure difficult.