A Spatiotemporal Data Model Based on History Topology and Descriptors
Gong Yu-chang · 2004
The problems of representing spatiotemporal information in spatiotemporal data models are analyzed, and a new spatiotemporal data model named STORM is presented. The model which is based on history topology and descriptors. Spatiotemporal information is represented using a hybrid approach, which combines explicit representation and implicit representation. History topology explicitly expresses historical relationships among spatiotemporal objects, while descriptors implicitly represent the internal changes of single spatiotemporal object and spatial topological relationships between spatiotemporal objects. The STORM model can represent both static semantics and dynamic semantics of spatiotemporal information. It can also represent and query spatiotemporal information using extended relational structures and extended relational algebra.