Toward a General Spatio-temporal Database Structure for Gis Applications
نویسندگان
چکیده
Handling time in geospatial information systems (GIS), the applicability of these valuable systems will increase, so, there hardly exist an application dealing with spatial information which can not be benefited from a temporal GIS. Despite many efforts undertaken since 1980, there is no generally accepted model which can satisfy all temporal GIS requirements. One of the most important problems in designing a temporal GIS lies within its database structure. In order to handle time in GIS, one must decide about how to organize such dynamic information. In the other word, extending spatial databases to include time is an essential issue. In this paper, a comparative study on different spatio-temporal database structures including three-domain model, extended versioning database structure and object-based spatio-temporal data model is undertaken and based on their advantages, a general spatio-temporal database structure is proposed and successfully implemented.
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