Keyphrases
- access control
- fine grained
- dynamic access control
- data security
- mobile devices
- security policies
- role based access control
- access control policies
- identity management
- mobile computing
- security requirements
- database security
- security model
- rbac model
- relational databases
- role based access control model
- access control systems
- trust relationships
- security architecture
- databases
- ubiquitous computing