Research on spatial-temporal data model in version-difference structure
Hong Zhigang · Cehui kexue · 2006
In this paper,a spatial-temporal data model based on version-difference structure is proposed,which is the key and kernel of temporal GIS.Based on the analysis of research national and international,and combined with national fundamental survey project,a spatial-temporal data model is proposed in this paper.The model,using technology of version management-dynamic correlation and dynamic hierarchy index,realizes the storage management and inquiry for temporal geographic data.It can reduce data redundance and improve data access efficiency.