Keyphrases
- xml documents
- xml data
- metadata
- databases
- relational databases
- xml format
- xml schema
- xml queries
- natural language
- context free
- structured data
- semi structured data
- markup language
- extensible markup language
- document centric
- xpath queries
- xml retrieval
- semi structured
- data exchange
- data integration
- topic maps
- keyword search
- relational data
- dependency parsing
- document structure
- update operations
- mutual exclusion
- syntactic analysis
- keywords
- natural language processing
- semantic web
- dependency parser
- object oriented databases
- context dependent