摘要
在移动计算环境中,为了支持断连操作,一方面,需要在移动客户端上进行数据缓存;另一方面,在重新连接后,移动客户端上的暂时事务需要在服务器上重新执行,这使得事务的一致性很难得到保障。扩展嵌套事务的概念并提出了一种模型,通过在事务执行机制中加入移动代理,使事务执行时数据的一致性在频繁断连状态下能满足应用要求。
In the mobile computing environment, for the support of the disconnection operation, mobile clients need caching data from the server. After reconnecting, the temporary transaction reprocesses on the server. So the consistency of data cannot be guaranteed. In this paper, based on the concept of nested transaction, a new model to handle the operation in a mobile computing environment is discussed by using agents in the transaction processing, the demand of data consistency could be satisfied.
出处
《信息技术》
2007年第9期67-69,72,共4页
Information Technology
关键词
移动计算环境
断连操作
嵌套事务
代理
mobile computing environment
disconnected operation
nested transaction
agent
