基于Web Service异质数据库对等更新系统实现

Implementation of peer-to-peer updating system used in distributed heterochronous databases based on web service

针对异构或异质环境下保持数据一致性的问题,给出一个在分布式异质数据库中,通过WebService技术,对数据库更新事务进行捕捉、存储后转发,进而实现数据同步更新的系统模型。然后依据模型的设计,应用Java语言进行了具体代码的实现。最后,将该系统作为DBA的工具,应用于大学计算中心学生管理系统,成功地解决了分布式异质数据库的同步更新问题。

To solve this problem of keeping date consistence in the heterochronous environment ,the paper puts forward a synchronous updating system model, which applied Web Service to capture ,store and then transfer updated things in the homogeneous distributed database system and farther implement the system＇s model of data synchronization, In the design of this model, the concurrency control of distributed things and the method of failure inspection are discussed and solved successfully . Then on the basis of this model , the model is implemented by Java. Finally, the system was applied as a tool for DBA into a Student MIS in Computer Center of University ,solving the synchronous updating problem successfully.