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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2007-05
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Reasons of the incremental information occurring in updating spatial database

ZHU Hua-ji,WU Hua-ruiNational Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China  
In order to quickly extract and distribute the incremental information of spatial database,this paper analyses the reasons of the incremental information of spatial database with the instance of residential feature.Firstly,a new concept of increment information is proposed based on the spatial-temporal change type and data delta.The change type describes the semanteme of increment information and data delta describes the content of increment information.Based on this concept,the types of residential change and relevant data deltas are put forward.There are two catalogs of change type,i.e.subjective change and objective change.The subjective change can be divided into three small change types in detail and the objective change into 12 small change types.Additionally,the incremental information resulted from the objective change is formalized.Thus,the automatic extraction of incremental information can be conveniently programmed.The classified result has been applied to the incremental information automatic extracting system of 1∶250 000 topographic databases.
【Fund】: 国家863计划项目(2006AA10Z237);; 国家科技攻关计划项目(2005BA113A03);; 国家农业部948项目(2006-G63)
【CateGory Index】: P208
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Chinese Journal Full-text Database 10 Hits
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【Secondary References】
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