Keyphrases
- query processing
- query language
- user queries
- database
- query evaluation
- efficient processing
- database queries
- data sources
- response time
- web search engines
- range queries
- constraint checking
- aggregate queries
- search queries
- database systems
- data sets
- data objects
- attribute values
- relational database systems
- complex queries
- search engine
- web queries
- neural network
- probabilistic databases