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http://dx.doi.org/10.11108/kagis.2021.24.4.184

Operation Technique of Spatial Data Change Recognition Data per File  

LEE, Bong-Jun (CmWorld Corporation)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.24, no.4, 2021 , pp. 184-193 More about this Journal
Abstract
The system for managing spatial data updates the existing information by extracting only the information that is different from the existing information for the newly obtained spatial information file to update the stored information. In order to extract only objects that have changed from existing information, it is necessary to compare whether there is any difference from existing information for all objects included in the newly obtained spatial information file. This study was conducted to improve this total inspection method in a situation where the amount of spatial information that is frequently updated increases and data update is required at the national level. In this study, before inspecting individual objects in a new acquisition space information file, a method of determining whether individual space objects have been changed only by the information in the file was considered. Spatial data files have structured data characteristics different from general image or text document files, so it is possible to determine whether to change the file unit in a simpler way compared to the existing method of creating and managing file hash. By reducing the number of target files that require full inspection, it is expected to improve the use of resources in the system by saving the overall data quality inspection time and saving data extraction time.
Keywords
Spatial data; Spatial data update; Spatial data change detection; Saving Resource;
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