Keyphrases
- query evaluation
- query processing
- datalog queries
- data objects
- query language
- query containment
- set valued attributes
- object model
- tree patterns
- conjunctive queries
- user queries
- complex objects
- database
- web search engines
- query logs
- d objects
- efficient processing
- query optimization
- closely related
- multi dimensional
- response time
- search queries
- database queries
- probabilistic databases
- range queries
- object tracking
- data sources
- moving objects
- search engine