Then, this paper deeply investigated the three difficult problems of the system, such as exception handling, security right controlling and heterogeneous database access.
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。
Access to heterogeneous databases is provided through requests expressed as queries on a canonical, virtual database.
通过将请求表达成在一个正规、虚拟的数据库上的查询来提供对异种数据库的访问。
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.
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。
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。
Transparent access between heterogeneous databases has been achieved by templates mapping between XML documents and database schemas.
通过XML文档和数据库模式之间的模板映射，较好地实现了异构数据库之间的透明互操作；
Two main problems we solve are: establishment of the campus' virtual database; integration access heterogeneous data.
其中主要解决了两个问题：校园综合信息平台系统的建立和异构数据的集成访问。
This paper makes use of the database middleware technology to resolve the problem of the access to the heterogeneous databases.
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。
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.
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。
The database applications based on distributed and heterogeneous problems are increasing rapidly, and the architecture of inter-access of heterogeneous database needs to be perfected and updated.
随着数据库实践中基于分布、异构问题的进一步增多，异构数据库互访的实现需要进一步完善和更新。
NET technology to achieve remote access to heterogeneous cadastral database.
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.
NET技术实现对远程异构地籍数据库的访问。
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