基于模式更新的实视图一致性维护策略

Materialized view maintenance strategy based on schema changes

通过定义不同数据源更新之间的并发依赖关系和同源依赖关系,利用概念化事务模型可实现松散耦合环境中视图的并发维护。在此基础上,提出VM_SCNF算法,解决不稳定网络环境中基于模式更新的实视图一致性维护问题,并通过实验原型验证了算法有效性。

The view maintenance process in the loosely coupled environment was implemented as a conceptual transaction, by the definitions of concurrency dependency and same-source dependency. Based on schema changes, the VM_SCNF algorithm was proposed to solve the consistency of view maintenance processes in the non-FIFO network environments. Finally, a preliminary experiment was carried out to verify the efficiency of the proposed algorithm.