摘要： 提出了一种数据网格中访问代理中间件的实现方法，该代理中间件通过在访问代理层实现与实际数据源相关的转换操作来提供对通用数据访问接口的支持，实现了真正意义上的语句透明。介绍了面向结构化数据和非结构化数据的两类访问代理，一种访问代理支持Oracle数据库的接入，另一种访问代理通过对自定义格式的大文件提供访问操作，实现了自定义数据源的接入。
访问代理；语句透明；数据集成
关键词:
访问代理,
语句透明,
数据集成
Abstract:
The implementation schema of access agent middleware in data grid environment is proposed, which provides the support of universal data access interface through implementing the conversion operation for real data sources in the access agent layer. In a sense, it implements the data transparence. Two kinds of access agent of structured and non-structured oriented data are described. One supports the plugin of Oracle database, while the other provides the access operation through self-defined big file, which implements the plugin of self-defined data resource.
Key words:
access agent,
data transparence,
data integration
中图分类号:
刘 瑰;朱鸿宇;谢向辉;何红旗;韦海亮;陈 琳;陆林生. 数据网格中访问代理中间件的设计与实现[J]. 计算机工程, 2007, 33(18): 42-44.
LIU Gui; ZHU Hong-yu; XIE Xiang-hui; HE Hong-qi; WEI Hai-liang; CHEN Lin; LU Lin-sheng. Design and Implementation of Access Agent Middleware in Data Grid Environments[J]. Computer Engineering, 2007, 33(18): 42-44.