Spatiotemporal Data Model and Extension of their Operations for a Layered Temporal Geographic Information System
Dongho Kim, Jong-Yun Lee, Youngdo Joo, Keun-Ho Ryu · The Transactions of the Korea Information Processing Society · 1998
The conventional geographic information systems(GIS) is a software which handles spatial and aspatial information of objects in the real world. The system can not support users time-varying information because it manipulates their snapshot data in the spatial database. Also even though it supports time-varying information, it is very limited and hs many difficulties in presenting and processing queries. This paper therefore describes an integrated spatiotemporal data model using loosely-coupled approach which is extended a time dimension for the previous spatial database and which handles time-varying historical information of spatial objects. Conclusionally this paper not only designed a data structure for spatiotemporal database, but also implemented spatial comparison operations varying over time.