An Event-state Oriented Spatio-temporal Data Model
Jiangfeng She · Geomatics & Spatial Information Technology · 2009
The relations between entities events and its states were analyzed,and an improvement on base state with amendments model were made.The key idea of this model is to build historical base states and events according to the frequency of event happened and the amount of data updates.It overcomes the weakness of snapshot model which leads a great deal of redundant data,and also overcomes the drawback of base state with amendments model which will need a great amount of complex computation when historical state is rebuild.