数据库网格:基于网格的多数据库系统

近年来,数据网格技术的快速发展为广域分布环境下的海量数据共享提供了强有力的支持。数据库网格是指主要由各种数据库管理系统构成的数据网格环境,其技术难点是在网格环境下研究解决分布式查询、事务、多数据源视图等传统的数据库领域的问题。该文通过讨论数据网格、数据库网格和多数据库的概念和特点,并比较上述问题在多数据库和数据库网格环境下的异同,对数据库网格的特点进行了总结,对数据库网格技术的研究和发展方向进行了探讨和展望。

Database Grid :the Multi-database Built on the Grid

The rapid development of Data Grid technology has provided enhanced support for sharing large-scale data and information over wide distributed environment.The existing management about data and information mainly depends on Database system,so the Database Grid environment mainly involving many different kinds of Database Management System,of which the core problem is to solve distributed query processing,Multi-database transaction,multiple-source view and other traditional problems in Database research field.This paper discusses and compares the concepts and characteristics about Grid,Data Grid,Database Grid and Multi-database,while summarizing and concluding the present Database Grid researching profile and its features.