QQ客服 官方微博 反馈留言

	GLOSDC: A framework for a global spatial data catalog
	Wu, Peng-Fei ; Fang, Yu ; Chen, Bin ; Wu, Xi ; Bin, Chen
	2008
英文摘要	GloSDC is a JXTA-based three-tiered framework for global catalog in grid GIS, which is a mechanism of using P2P model to solve the problem of grid replica organization. We use horizontal non-overlapping fragmentation method to partition a logical layer into physical fragments according spatial extent. A fragment layer is an autonomous layer stored in a grid node, being accessed through node SDE. There are no centralized data dictionary and managing node in the grid spatial database. In order to improve the efficiency, we use R-tree index in fragment layers, quad-tree in fragment catalogs. The lazy release consistency is used to maintain the consistency between secondary and master replicas. The soft-state protocol is used to keep the catalog consistent. Based on concurrent spatial queries, data refinement, spatial analysis and asynchronous rendering, the response latency on clients is reduced remarkably. ?2008 IEEE.; EI; 0
语种	英语
DOI标识	10.1109/IGARSS.2008.4779241
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/263253]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wu, Peng-Fei,Fang, Yu,Chen, Bin,et al. GLOSDC: A framework for a global spatial data catalog. 2008-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。