摘要
分析地震、地质行业的数据资源特点,在数据网格中间件OGSA-DAI基础上提出一种基于XML的分布异构数据访问与集成框架,实现数据的透明访问和联合查询。系统以XML作为公共数据模型,使用三层模式集成机制,以XQuery同时作为XML模式之间的映射语言及全局查询语言,简化全局视图的构造和系统的查询处理。
The characteristics of data resources in seismological and geological industries are analyzed. Utilizing the data grid middleware OGSA-DAI, an XML-based heterogeneous data access and integration framework is presented, and it can provide data transparent access and fusion query. The system chooses XML as a common data model, utilizes the three-layer schema integration mechanism. XQuery is used as both the mapping language among XML schemas and the global query language, so that the global view construction and the query processing of the system are simplified.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第22期52-54,共3页
Computer Engineering
基金
国家"973"计划基金资助项目(20058321905)
国家地震网络计算应用系统基金资助项目(2004DKA50740)
关键词
异构数据源
数据集成
数据网格
模式映射
全局查询
heterogeneous data resource
data integration
data grid
schema mapping
global query
