文章基本信息

标题：Distributed Geographic Structure Query Language-DGSQL
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作者：Liang Wu ; Zhanlong Chen ; Xincai Wu 等
期刊名称：Journal of Software Engineering
印刷版ISSN：1819-4311
电子版ISSN：2152-0941
出版年度：2015
卷号：9
期号：2
页码：328-336
DOI：10.3923/jse.2015.328.336
出版社：Academic Journals Inc., USA
摘要：Combined with Spatial data model of MAPGIS, this study brings up distribute structure query language (DGSQL) and has designed the interpreter of DGSQL. This study has given the method of the analysis of the distribute structure query language to the GSQL of the node of the spatial data and built the mapping model of the global spatial query sentence to the local query sentence. Hence, DGSQL can sustain the query of distribute spatial data. This study has realized the spatial relation operation (Intersection, Union, Difference) and synthesized operation (Length, Buffer, intersecting region) and so on.