Keyphrases
- access control
- role based access control
- access control policies
- multi domain
- rbac model
- semantic web
- knowledge representation
- access control models
- data security
- fine grained
- role based access control model
- security policies
- conflict resolution
- semantic web technologies
- database
- owl ontologies
- security model
- security requirements
- privacy policies
- security mechanisms
- text categorization
- relational databases
- database systems