一种数据库访问中间件模型的构造方法

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。数据访问中间件负责数据访问客户端和数据库服务器之间的通信并提供应用程序服务，利用数据访问中间件用户可以在客户端发出数据查询命令，经过中间件处理，由服务器完成数据查询，再通过中间件将结果送回。论述了数据库访问中间件技术的发展，提出了一种由客户交互模块、远程访问模块、安全控制模块、缓冲区、操作评价模块和连接管理模块6部分组成的数据库访问中间件构造模型方案。

A Construction Method of Middleware Model to Access Database

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.Data access middleware is responsible for communications data in the access client and database server,and provides application services.By using data access middleware,the user can issue on the client data query command,the server can complete the data query and sent the results back to the client.The development of database access middleware is discussed,and a structural model of database access middleware is presented.The model is implemented by the six components,including customer interaction modules,remote access module,the security control module,the buffer zone,operation evaluation module and connection management module.