基于交换中心的分布式系统数据同步技术

Distributed-System Data Synchronization Technology based on Exchange Center

分布式数据库系统由于具有高效性、数据共享等优点被广泛应用。目前,分布式数据库间的数据同步已成为一个热门研究方向。因此,提出了一种基于交换中心的分布式数据库系统同步方案。方案中,各数据库站点只需要直接与交换中心进行数据交换,可有效避免各数据库站点之间相互维护的麻烦;可灵活配置同步模式和数据下发方式,并有利于以后系统的扩充或删减;系统采用JAVA相关技术进行开发,具有很好的跨平台适应能力;传输过程采用符合一定格式的XML文本进行传输,很好地解决了异构数据库系统间的不兼容性;传输数据按照安全协议数据格式封装,有效保证了数据的安全性、完整性和抗抵赖性。

Distributed database systems are widely used for their high efficiency and data sharing, and data synchronization of between distributed databases now becomes a hot research topic. A distributed-database-system synchronization scheme based on exchange center is proposed, in which each database site only need to exchange data directly with the exchange center, thus to effectively avoid the trouble of mutual maintenance of between database sites, and meanwhile realize flexible configuration of synchronization mode and data delivery method, and be conducive to future expansion or deletion of the system. The system uses JAVA-related technology for development and possesses good cross-platform adaptability; a certain format of XML text is used for transmission, fairly solving the heterogeneity of between heterogeneous database systems. In addition, data is transmitted and encapsulated according to the security protocol data format, effectively ensuring data security, integrity and non-repudiation.