Cooperative Approach for an Object-Oriented Spatio-Temporal Database System
Yang Hee Kim · The Journal of Korean Institute of Information Technology · 2010
In this paper, we present a cooperative object-oriented spatio-temporal database system called COST. A cooperative approach is introduced to the object-oriented spatio-temporal database system for data modeling and query processing. For handling the structure of spatio-temporal objects and the spatio-temporal operators, we propose three layers of data modeling: (1) a spatio_temporal internal description model; (2) a spatio_temporal object model; (3) a spatio_temporal cooperative model. We then propose STOQL, a spatio-temporal object-oriented query language. STOQL provides an integrated mechanism for the graphical display of spatial objects and the retrieval of spatio-temporal and aspatial objects. In order to evaluate STOQL queries, a top-down query processing method is used.