Keyphrases
- data objects
- efficient processing
- query language
- object model
- query processing
- web search engines
- complex objects
- database
- query evaluation
- database queries
- response time
- d objects
- databases
- search queries
- spatial relationships
- user queries
- database objects
- answering queries
- aggregate queries
- query formulation
- pre computed
- statistical databases
- complex queries
- multiple objects
- spatial relations
- query logs
- web search
- moving objects
- search engine