Keyphrases
- access control
- xml documents
- high speed
- fine grained
- dynamic access control
- xml data
- data security
- relational databases
- structured data
- security policies
- xml databases
- xml schema
- role based access control
- access control policies
- xml queries
- security model
- access control models
- identity management
- role based access control model
- data model
- security mechanisms
- sql queries
- security architecture
- database security
- keyword search
- relational tables
- access control mechanism
- security requirements