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	GSQL-R: A query language supporting raster data
	Liu, Yu ; Wang, Yinghui ; Zhang, Yi ; Lin, Xing ; Qin, Shi
	2004
英文摘要	Spatial database has become the dominant techniques to manage spatial data in geographical information systems, and geographic structured query language (GSQL) is the key of spatial database design and implementation. At present, GSQL for vector data has been widely studied. However, when the raster data are considered, there is little specific research. On the basis of corresponding ADTs (abstract data type), the GSQL-R is defined and the instances are described. The definition includes three parts, i.e. data definition language, data table schema and data manipulation language. The example statements of GSQL-R demonstrate that it provides a convenient way for raster data access and manipulation and supports vector data seamlessly.; EI; 0
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/329203]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Liu, Yu,Wang, Yinghui,Zhang, Yi,et al. GSQL-R: A query language supporting raster data. 2004-01-01.

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