Keyphrases
- access control
- fine grained
- dynamic access control
- data security
- security policies
- role based access control
- security mechanisms
- access control models
- ubiquitous computing environments
- access control policies
- security requirements
- identity management
- database security
- access control mechanism
- access control systems
- role based access control model
- security architecture
- trust relationships
- rbac model
- security model
- unauthorized access
- database