Abstract. Access control policies are security policies that govern access to resources. Real-time update of access control policies, that is, updating policies while they are in e...
Real-time update of access control policies, that is, updating policies while they are in effect and enforcing the changes immediately, is necessary for many security-critical appl...
This paper presents a framework for verifying the access control requirements of real-time application systems such as workflow management systems and active databases. The tempor...
Basit Shafiq, Ammar Masood, James Joshi, Arif Ghaf...
Many real-time systems need to maintain fresh views which are derived from shared data that are distributed among multiple sites. When a base data item changes, all derived views ...
- Performancestudiesof concurrencycontrol algorithms for conventional database systems have shown that, under most operating circumstances, locking protocols outperform optimistic ...