Keyphrases
- keyword search
- keyword queries
- xml documents
- document centric
- xml data
- xml data sources
- query language
- databases
- xml keyword search
- keywords
- xml databases
- xml fragments
- markup language
- xml queries
- relational databases
- database
- xml format
- data retrieval
- query processing
- efficient query processing
- metadata
- xml query languages
- query engine
- xml trees
- data exchange
- search queries
- recursive queries
- semi structured data
- xml retrieval
- search engine
- native xml databases
- relational data
- multimedia databases
- xml schema
- structured data
- data representation
- query optimization
- database querying
- information integration
- query interface
- keyword extraction
- document structure
- graph databases
- topic maps
- object oriented databases
- data types
- data management
- information retrieval systems
- object oriented