Keyphrases
- access control
- fine grained
- data security
- data protection
- dynamic access control
- digital rights management
- security policies
- access control policies
- role based access control
- access control models
- database
- security model
- digital libraries
- access control mechanism
- security mechanisms
- security analysis
- database security
- role based access control model
- role assignment
- databases
- access control systems
- database systems
- security architecture
- smart card
- encryption scheme