Keyphrases
- access control
- xml documents
- security mechanisms
- rbac model
- role based access control
- xml data
- security requirements
- markup language
- access control mechanism
- data security
- xml schema
- xml databases
- xml queries
- object oriented
- databases
- multimedia
- relational databases
- data exchange
- metadata
- xml retrieval
- extensible markup language
- database
- xml format
- xpath queries
- semi structured
- multi domain
- access control models
- security issues
- data centric
- topic maps
- data model
- security model
- security protocols
- security policies
- keyword search
- distributed systems
- role based access control model