Keyphrases
- keyword queries
- keyword search in relational databases
- keyword search
- query keywords
- xml keyword search
- structured data
- keywords
- xml databases
- information access
- semi structured
- xml streams
- query evaluation
- structured queries
- candidate answers
- xml data
- efficient processing
- xml documents
- relational databases
- probabilistic xml
- user queries
- query processing
- database schema
- search engine
- information extraction
- digital libraries
- databases
- domain knowledge
- query language
- graph structure
- database systems
- multimedia