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针对空间数据更新中变化信息与原数据库集成效率低的问题,提出了基于更新过程的变化信息描述模型(UPM-CIR),即将更新过程分解为更新事务序列,并采用适当的空间位置、几何、属性等信息对更新事务进行补充描述,基于这种定性、定量的方法描述存储变化信息,使得更新过程能够被复制、解析、回放。在空间数据的更新试验中,采用UPM-CIR模型实现变化信息的表达、存储,并将存储的变化信息集成到其他待更新数据中,试验结果表明该描述方法能够实现变化信息的自动回放、高效集成。 更多还原

【Abstract】 Aim to solve the problem of low efficiency of changed information integrating into original database,a new description method based on the updating process was proposed in this paper named UPM-CIR.This method broke down the updating process to update transactions sequence,and the update transaction was described with the spatial position,geometry,and attributes.Using the qualitative and quantitative description method to storage changed information,the updating process can be replicated,parsed a...