Heterogeneous Database Access的意思|示意

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。

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；

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。

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。

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。

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。