构建集中式联合目录系统的核心及难点在于实现和分布式、异构的成员馆馆藏书目数据库的数据同步。为实现这一功能,从联合目录系统的模式和OAI-PMH协议的原理出发,详细介绍利用OAI技术建立和同步联合目录系统中心数据库的方法和技术,同时针对保持数据的实时性和准确性等问题进行探讨并提出可行的解决办法,以期对相关的工作实践有所帮助。 The core and difficulty in constructing a centralized federated catalog system lies in realizing the data synchronization with the distributed and heterogeneous member library bibliographic databases. In order to realize this function, from the mode of joint directory system and the principle of OAI-PMH protocol, this paper introduces in detail the methods and techniques of using OAI technology to establish and synchronize the database system of co-directory system, and at the same time aims at maintaining the real-time and accuracy of data Discuss the problems and put forward feasible solutions, in order to help the related work practice.