Keyphrases
- access control policies
- database systems
- access control
- conflict resolution
- security policies
- access control systems
- distributed environment
- extended logic programs
- multilevel secure
- database
- data management
- fine grained
- data model
- security mechanisms
- database applications
- query processing
- role based access control
- trust negotiation
- information flow
- security requirements
- loosely coupled
- security issues
- database management systems
- web services
- databases