Keyphrases
- query processing
- database
- user queries
- data structure
- query evaluation
- query formulation
- relevance feedback
- response time
- query expansion
- original query
- data sources
- range queries
- multiple queries
- query execution
- relational databases
- keywords
- retrieval systems
- user interaction
- database queries
- retrieval method
- result set
- efficient processing
- website
- information retrieval