Keyphrases
- query processing
- query language
- response time
- database
- efficient processing
- database queries
- query evaluation
- range queries
- web search engines
- relational database systems
- complex queries
- user queries
- data sources
- probabilistic databases
- web queries
- aggregate queries
- retrieval systems
- search queries
- query logs
- attribute values
- data management
- data streams
- data sets