差分式多时态多尺度空间数据库模型研究

Research on Incremental Multi-Scale and Multi-Temporal Spatial Database

针对如今多尺度地理空间数据库更新困难的问题,通过综合考虑时空数据模型与多尺度数据模型的特点,并根据多尺度地理数据差分式更新模式,设计出一种"层次—快照"式多尺度时空数据库模型。并通过数据关联表建立起多尺度多时空数据之间的数据联系。实验结果表明,该模型有利于多尺度数据的更新以及对地理数据的数据挖掘。

For the difficult issues of update of the multi -scale geospatial database , by considering characteristics of temporal data model and multi-scale data model , and incremental multi -scale geographic data update mode , this paper illustrates a multi -scale and multi-temporal spatial database model .The links between multi -scale and multi-temporal data is established by using the data associated table .Through applications , the experiments show that the model is conducive to the update of multi -scale data and the data mining of geographic data .