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时空查询代数是一种抽象的时空查询语言,它利用时空抽象数据类型的一部分基本的谓词、操作、函数来表达时空查询。而在时空微观运算上采用的数据结构是本源XML数据库(Native XML Database,NXD)用来存储半结构化数据的XML数据结构,所以对XML查询代数-XQuery FS的数据类型和查询操作做了时空扩展,并引入了GML中描述地理特征及其关系的数据类型,定义了一种新的基于XML数据模型的时空查询代数。
Abstract：The spatio-temporal query algebra is one kind of abstract spatio-temporal query language;it uses the subset of basic predicates,operations,the functions of spatio-temporal abstract data type to express the spatio-temporal query.While the data model of the spatio-temporal microscopic operates employed the XML data model which the Native XML Database(NXD) adopt to store semi-structured spatial-temporal data,therefore this article held the space and time expansion to the XML query algebra-XQuery FS data type and the query,and introduced in GML to describe the geography feature and it's relationships,has defined one kind newly based on the XML data model space and time inquiry algebra.
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基本信息:
中图分类号:TP311.13
引用信息:
[1]柳晓华,万幼川,黄解军.一种基于XML数据模型的时空查询代数探讨[J].地理空间信息,2011,9(03):81-85+189.
基金信息:
国家自然科学基金资助项目(41071104);; 武汉市青年科技晨光计划资助项目(200950431203)
2011-06-28
2011-06-28