本文利用数据库中间件技术来解决异构数据库访问的问题。
This paper makes use of the database middleware technology to resolve the problem of the access to the heterogeneous databases.
然后，就系统的三个难点问题——异常处理、安全权限控制和异构数据库访问进行了深入的研究。
Then, this paper deeply investigated the three difficult problems of the system, such as exception handling, security right controlling and heterogeneous database access.
通过异构批处理特性，这些跨表更新只需访问数据库一次即可完成。
With heterogeneous batching, these updates across tables can be done in a single trip to the database.
将这项技术应用于油田中的地质图绘制方面，解决了油田中多层分布式异构数据库的访问、管理和地质图件的动态生成问题。
This technology solves the problems of access and management of the multi-tier distribution heterogeneous databases for oilfields and dynamic generation of geologic maps.
通过比较多种数据库访问方法，设计出基于odbc的数据库网关，从而实现从一点集中备份异构数据库和备份端的零配置。
Compared with various DB access methods, database gateway based on ODBC is designed, so as to accomplish centralized backup of heterogeneous DBMS from one point and no configuration at backup side.
该解决方案通过建立统一的数据模型，使用元数据与多数据库系统实现了对分布的异构的空间数据的统一访问请求服务。
Based on the unified data modeling, this resolution realizes the uniform request service to distributed heterogeneous spatial data by metadata and multi-database system.
数据库访问中间件是所有中间件中最成熟的一种，它支持应用程序和本地或异地的同构或异构数据源进行通信。
Database access middleware is the most sophisticated of all kinds. It supports communication in the application and data sources, which can be local or remote and isomorphism or heterogeneous.
NET技术实现对远程异构地籍数据库的访问。
NET technology to achieve remote access to heterogeneous cadastral database.
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.
该方案实现了异构数据库的透明访问和联合查询，为企业信息系统集成提供了一种技术方法。
It achieves transparent access and unified query, and provided one technical method for the enterprise information system integration.
作者在论文当中，着重叙述了此框架中如何构造系统的XML元数据，和如何基于XML实现异构数据库系统的数据转换和数据的透明访问这两个问题。
We narrates how to construct the systematic XML meta-data and realize the heterogeneous database's data convertion and transparent visiting in this thesis.
建立这些异构型数据库的网络，实现它们之间的互连通信与分布式访问，这是分布式数据库研究的一个重要方面。
It is an important research area to establish the communication between and tc have the distributed access to these databases.
通过实践着重研究和验证了如何构造系统的XM L元数据，以及如何实现基于XML的异构数据库的数据转换和数据透明访问等一系列问题。
Through actual application, a series of problems are researched and proved which include how to construct the systematic XML meta-data and realize the heterogeneous dat...
通过实践着重研究和验证了如何构造系统的XM L元数据，以及如何实现基于XML的异构数据库的数据转换和数据透明访问等一系列问题。
Through actual application, a series of problems are researched and proved which include how to construct the systematic XML meta-data and realize the heterogeneous dat...
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