The distributed data query is the core of the distributed database managing system, but the optimized query algorithm is the key technology in query processing.
分布式数据查询是分布式数据库管理系统的核心，而查询优化算法又是查询处理中的关键技术。
The distributed data access middleware may meet the needs of distributed data query and distributed calculation of enterprise.
该分布式数据服务中间件可满足企业分布式查询、分布式计算等实际应用需求。
Main functions of data access middleware are location transparency, distributed data query, transaction process and heterogeneous data sources compatibility.
数据服务中间件的主要功能包括数据的位置透明性、分布式数据查询、事务处理、异构数据源兼容。
Main functions of data access middleware are location transparency, distributed data query, transaction process and heterogeneous data sources compatibility.
数据服务中间件的主要功能包括数据的位置透明性、分布式数据查询、事务处理、异构数据源兼容。
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