| A solution of spatial query processing and query optimization for spatial databases |
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| 作者单位： | 1. Department of Computer Science，Peking University，Beijing 100871，P.R.China; 2. Department of Intelligence Science，Peking University，Beijing 100871，P.R.China; 3. Beijing Institute of Surveying and Mapping，Beijing 100038，P.R.China |
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| 摘 要： |
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| 关 键 词： | 空间数据库 询问语言 空间数据模型 空间操作 最优化 |
A solution of spatial query processing and query optimization for spatial databases |
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| YUANJie XIEKun-qing MAXiu-jun ZHANGMin SUNLe-bin. A solution of spatial query processing and query optimization for spatial databases[J]. Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition), 2004, 16(5): 165-172 |
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| Authors: | YUANJie XIEKun-qing MAXiu-jun ZHANGMin SUNLe-bin |
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| Affiliation: | [1]DepartmentofComputerScience,PekingUniversity,Beijing100871,P.R.China [2]DepartmentofIntelligenceScience,PekingUniversity,Beijing100871,P.R.China [3]BeijingInstituteofSurveyingandMapping,Beijing100038,P.R.China |
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| Abstract: | Recently, attention has been focused on spatial query language which is used to query spatial databases. A design of spatial query language has been presented in this paper by extending the standard relational database query language SQL. It recognizes the significantly different requirements of spatial data handling and overcomes the inherent problems of the application of conventional database query languages. This design is based on an extended spatial data model, including the spatial data types and the spatial operators on them. The processing and optimization of spatial queries have also been discussed in this design. In the end, an implementation of this design is given in a spatial query subsystem. |
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| Keywords: | spatial database query language spatial data model spatial operations query optimization |
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