Mechanism and Key Technologies of Spatial Data Seamless Integration Version Management
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摘要: 为解决分布式异构环境下空间数据无缝集成及其增量更新的数据组织和查询效率问题，利用地理数据库版本机制所具备的多分量存储和存储增量等特性，通过把有缝数据与版本机制中删除分量相对应，把无缝数据与版本机制中添加分量相对应，把无缝一致性维护过程与版本机制中的数据更新过程相对应，提出并建立了空间数据无缝集成版本机制.该机制把无缝集成问题转化成初始无缝化版本的建立问题以及版本数据的一致性维护问题，把无缝查询及动态拼接过程转化成分布式版本查询过程，从而降低了问题的处理复杂度，提高了系统效率；该机制还能为增量更新提供存储支持.Abstract: In order to solve the data organization problem and improve the query efficiency of seamless integration of spatial data and its incremental update in distributed and heterogeneous environment, some features of geo-database mechanism can be used, such as storage in multi-components and incremental storage. Through corresponding seam data to the deleted component in version mechanism, and corresponding seamless data to the added component in version mechanism, and corresponding seamless consistency maintenance process to the data version update process, it establishes a new mechanism called spatial data seamless integration version management mechanism. By this method, seamless integration issue is transformed into initial seamless version establishment issue and version data seamless consistency maintenance issue, and seamless spatial query and dynamic splicing process is transformed into the distributed version query process, which reduces the computational complexity and enhances system efficiency; with the seamless version mechanism, natural storage support for the incremental update is also provided.
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