摘要
在分布式数据库系统中,并发控制是分布式事务管理器的的基本任务之一,它能够为并发的事务产生一个可串行化调度,但即使每个局部调度都是可串行化的,也不能保证分布式数据库的一致性.提出了在每一个局部站点上设置事务登记表的方法,使子事务间能够按照同一种串行化顺序执行,保证了多副本一致性.
Concurrency control, which can create a serializable schedule for concurrency transaction, is one of the tasks of the distributed transaction manager in DDBS. Though every local schedule is serializable, the consistency of DDBS is not maintained. To resolve this problem , the method is presented for setting the transaction list at each local site. The task of the transaction list is to ensure database consistent when the subtransaction are executed by the same serializable order.
出处
《应用科技》
CAS
2005年第2期56-58,共3页
Applied Science and Technology
关键词
分布式数据库
并发控制
一致性
可串行化
distributed database
concurrency control
consistent
serializable
