Keyphrases
- access control
- dynamic access control
- fine grained
- security policies
- data security
- role based access control
- access control models
- security mechanisms
- access control policies
- security requirements
- trust model
- role based access control model
- usage control
- security model
- rbac model
- database security
- role assignment
- third party
- security architecture
- access control mechanism
- identity management
- query processing