Data warehousing is also very useful from the point of view of heterogeneous database integration.
从异种数据库集成的角度看，数据仓库也是十分有用的。
Decomposition and optimization of global query is one of hard problems in heterogeneous database integration.
全局查询的分解与优化是异构数据库的集成中许多难题之一。
Data warehousing provides an interesting alternative to the traditional approach of heterogeneous database integration described above.
对于异种数据库集成的传统方法，数据仓库提供了一个有趣的替代方案。
By both practical and theoretical, research in heterogeneous database integration makes important sense for more and more heterogeneous databases.
由于数据库异构现象越来越普遍，研究异构数据库集成无论在理论还是实际应用上都具有非常重要的意义。
It analyzes the mapping between the RDBS and XML, then proposes a new schema of heterogeneous database integration based on XML and presents implementation method of main parts in details.
重点分析了XML与关系数据库之间的映射，提出了一种以xml作为中间件的异构数据库集成方案，并对其中的主要环节给出了具体实现。
And also by using the principle and mechanism of ODBC interface technique PB to access the database, this paper provides a solution based on ODBC middleware for heterogeneous database integration.
提出了用PB的ODBC接口访问数据库的原理和机制，为异构数据库的集成提供了一种基于ODBC中间件的解决方案。
And also by using the principle and mechanism of ODBC interface technique PB to access the database, this paper provides a solution based on ODBC middleware for heterogeneous database integration.
提出了用PB的ODBC接口访问数据库的原理和机制，为异构数据库的集成提供了一种基于ODBC中间件的解决方案。
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