Data models in geographic information systems

Geographic information systems (GIS) are used to collect, analyze, and present information describing the physical and logical properties of the geographic world. Geographic referenced data is the spatial data that pertain to a location on the earth's surface. There are 4 major functional units...

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Bibliographic Details
Published in:Communications of the ACM 1997-04, Vol.40 (4), p.103-111
Main Authors: Shekhar, Shashi, Coyle, Mark, Goyal, Brajesh, Liu, Duen-Ren, Sarkar, Shyamsundar
Format: Magazinearticle
Language:English
Subjects:
Computer based modeling
Data models
Geographic information systems
Object oriented programming
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Summary:Geographic information systems (GIS) are used to collect, analyze, and present information describing the physical and logical properties of the geographic world. Geographic referenced data is the spatial data that pertain to a location on the earth's surface. There are 4 major functional units in a typical GIS: 1. data input unit, 2. data model, 3. data manipulation capabilities, and 4. result presentation facilities. A new model, called the Geographic Information System Entity Relational (GISER) model, is proposed. This model explicitly represents the discretization aspects so as to unify the 2 approaches.
ISSN:0001-0782
1557-7317
DOI:10.1145/248448.248465