摘要
P2P多数据库系统是一种分布式的数据库系统,它是P2P计算系统和传统数据库系统的结合体。P2P计算系统的动态性使得P2P多数据库系统的事务管理缺少全局控制机制。在事务传播过程不存在循环的前提下,文章提出了一种保证P2P多数据库系统中事务全局串行化的并发控制协议,它通过控制一系列全局事务传播过程中每个熟识关系的两级串行化来实现。
P2P multidatabase system is a kind of distributed database system, which combines both P2P computing system and conventional database system.The dynamic feature of P2P computing system makes it lack a global control scheme in transaction management. Supposing there exists no cycle in the process of transaction propagation, this paper introduces a concurrency control protocol which can guarantee the global serializability of transactions in P2P multidatabase system. It is achieved by controlling the two-level serializability over each acquaintance during the propagation of a series of global transactions.
出处
《电脑与信息技术》
2008年第1期22-24,共3页
Computer and Information Technology
关键词
并发控制协议
全局串行化
分布式依赖图
concurrency control protocol
global serializability
distributed dependency graph
