摘要： 针对下一代网络(NGN)业务开发过程中业务提供商需要和电信运营商的各种异构数据库进行通信的情况，设计和实现一种基于异构的数据库中间件。采用分层结构和多线程的方式，并对数据访问请求进行统一调度排队，从而有效地提高数据访问的安全性、灵活性和可扩展性。目前该中间件已经大量地应用于在线的NGN业务系统中。

关键词: 中间件, 调度, 人工业务, 自动业务

Abstract: In the development process of Next Generation Network(NGN) service, service provider needs to communicate with various heterogeneous database belonging to telecom operators, so it is required imminently to design and implement a heterogeneous database middleware. It adopts layer-framework and multithreading method, queues and schedules data access request uniformly, therefore it improves the security, flexibility and expansibility on data access, and now this middleware is extensively applied to on-line NGN service system.

Key words: middleware, scheduling, manual service, auto service

中图分类号: 

• TP391