数据库安全的研究与进展

1 引言计算机的产生逐渐将人类带进了信息化技术的时代,但是高风险性使得信息系统的安全性问题随着信息化进程而变得日益敏感和重要。数据库技术是组成信息系统的核心技术之一,因此,研究数据库的安全是很重要的。数据库安全的威胁是数据的泄密和非法修改,也就是对数据的三种属性的破坏:可用性、保密性和完整性。可用性是指合法用户可以随时访问他被授权可以访问的数据;保密

Survey of Security in Database

Being an important part of Information System, Database Security has absorbed much attention fordecades. First, we bring forth the Database Security's contents, properties of data: sensitivity, integrity and availabil-ity. Several access control models to guarantee these properties are described in this paper. Due to the challengesbrought by advanced DBMSs such as OODBMS and ADBMS, we also discuss some security topics in these fields. Atthe end of this paper, the encryption control and inference control are reviewed together with some trend of thedatabase security technology in the future.