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Title of Journal: Sci China Ser ETechnol Sci

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Abbravation: Science in China Series E: Technological Sciences

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SP Science in China Press

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1862-281X

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Loose architecture of multilevel massive geospati

Authors: ChongJun Yang Sheng Wu YingChao Ren Li Fu FuQing Zhang Gang Wang Jian Tan DongLin Liu ChaoJi Ma Li Liang
Publish Date: 2008/06/08
Volume: 51, Issue: 1, Pages: 114-
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Abstract

This paper proposed a virtual quadtree VQT based loose architecture of multilevel massive geospatial data for integrating massive geospatial data dispersed in the departments of different hierarchies in the same sector into a unified GIS Geographic Information System platform By virtualizing the nodes of the quadtree the VQT separates the structure of data organization from data storage and screens the difference between the data storage in local computer and in the remote computers in network environment And by mounting VQT easily integrates the data from the remote computers into the local VQT so as to implement seamless integration of distributed multilevel massive geospatial data Based on that mode the paper built an application system with geospatial data over 1200 GB distributed in 12 servers deployed in 12 cities The experiment showed that all data can be seamlessly rapidly traveled and performed zooming in and zooming out smoothly

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