摘要
针对实时数据库系统 ,提出了一种两级并发控制策略 ,以适应应用中两类不同特征事务的并发控制特征 ;给出了一个两级并发控制策略的具体实现方面的体系结构及功能分布 ;针对嵌套事务的不同特征 ,分析和讨论了其可能发生的问题及相应封锁协议、协议的多种特性 .
The multiclass concurrency control algorithm is discussed which can be used to resolve the conflicts between the real time transactions and non real time transactions. The 2PL OS and nested transactions are addressed, and the protocol of 2PL OS applied in nested real time transactions of RTDBS is proposed. In connection with RTDBS, the author has put forward a multiclass concurrency control algorithm that can be applied to resolve the conflicts between the real time transaction and the non real time transaction. The structure of the system and the distribution of its functions are also presented. For different features of 2PL OS and nested transactions, the possible problems and the related protocol with various special properties for 2PL OS and nested transactions are analyzed.
出处
《华中理工大学学报》
CSCD
北大核心
2000年第8期14-16,共3页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金资助项目!( 69573 0 1 0 )
关键词
实时数据库
两级并发控制
嵌套实时事务
RTDBS
multiclass concurrency control algorithm
ordered sharing
nested real time transaction
