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《Geomatics World》 2017-04
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Research on Changed Spatial Data Synchronization Technology Based on the "Feature Object Spatial Information Fingerprint"

WANG Changping;Fuzhou Investigation and Surveying Institute;  
With the development of spatial database construction and application,spatial data dynamic update and data distribution are the main research topics for ensuring the current situation of data.The system proposed a method of the coordinate array of the feature change by MD5 algorithm to generate 32-bit string as"feature object space information fingerprint",then extracted the changed data with the CDC Oracle database technology,and through the ETL data synchronization mechanism managed the space synchronization process,to achieve the resumption of synchronization function on multi-node,multi-cascade configuration synchronization layer on demand,different Oracle database version,and different Arc SDE versions of the space data.
【Key Words】: spatial data synchronization feature object spatial information fingerprint multi joint synchronization resume from break point
【CateGory Index】: P208
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