| 空间区域聚集查询方法研究 |
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| 引用本文： | 梁银,张虹. 空间区域聚集查询方法研究[J]. 计算机工程与应用, 2009, 45(25): 135-137. DOI: 10.377S/j.issn.1002-8331.2009.25.041 |
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| 作者姓名： | 梁银 张虹 |
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| 作者单位： | 中国矿业大学,环境与测绘学院,江苏,徐州,221008;徐州师范大学,计算机科学与技术学院,江苏,徐州,221116;中国矿业大学,环境与测绘学院,江苏,徐州,221008 |
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| 基金项目： | 徐州师范大学自然科学基金重点项目 |
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| 摘 要： | 为了提高空间数据仓库中区域聚集查询的响应性能,通过使用R_tree对空间维进行分层后,采用物化视图存储空间对象及R_tree中间结点的聚集信息,能够有效地支持空间维和非空间维上的区域聚集查询。
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| 关 键 词： | 空间区域聚集查询 物化视图 空间联机分析处理 |
| 收稿时间： | 2009-05-26 |
| 修稿时间： | 2009-6-29 |
Efficient method for spatial range aggregate query |
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| UANG Yin,ZHANG Hong. Efficient method for spatial range aggregate query[J]. Computer Engineering and Applications, 2009, 45(25): 135-137. DOI: 10.377S/j.issn.1002-8331.2009.25.041 |
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| Authors: | UANG Yin ZHANG Hong |
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| Affiliation: | LIANG Yin1,2,ZHANG Hong11.School of Environment Science , Spatial Informatics,China University of Mining , Technology,Xuzhou,Jiangsu 221008,China 2.Department of Computer Science , Technology,Xuzhou Normal University,Jiangsu 221116,China |
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| Abstract: | To improve response performance of range aggregate queries in spatial data warehouse,R-tree index is employed to derive the spatial hierarchies on spatial dimension for pre-aggregation and materialization.Materialized views store the aggregate values of spatial object or internal nodes of R-tree.Therefore,range aggregate queries on both non-spatial dimensions and spatial dimensions can be effectively processed without visiting spatial objects whose parent node is fully included in the query range,by using t... |
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| Keywords: | spatial range aggregate query materialized view spatial On-Line Analysis Processing |
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