摘要
安全实时数据库必须同时满足安全性和实时性,然而这两者有时可能相互冲突。为了解决这种冲突,提出了基于多版本的安全实时并发控制协议。协议为每个数据对象提供两个版本:工作版本和只读版本,根据事务和数据对象的安全级为事务提供不同的数据版本,有效地解决了实时性与安全性之间的冲突,最后给出了协议的正确性证明。
Secure real-time database must simultaneously satisfy requirements in guaranteeing data security and timely. However, these two requirements may conflict with each other. To solve this conflict, a new secure real-time concurrency control protocol is presented. The protocol solves this conflict by providing two versions for each data object, transactions use different data versions according to both their security level and the security of data objects. Finally, the proofs of correctness are given,
出处
《计算机工程与设计》
CSCD
北大核心
2008年第8期1893-1895,共3页
Computer Engineering and Design
关键词
实时数据库
数据库安全
多版本
并发控制
串行化顺序
real-time database
database security
multiversion
concurrency control
serialization order
