Keyphrases
- query processing
- cost model
- efficient query processing
- xml data
- query optimization
- index structure
- r tree
- efficient processing
- data management
- query execution
- similarity search
- query evaluation
- multidatabase environment
- range queries
- user queries
- database systems
- query processor
- processing queries
- highly ranked
- database query processing
- inverted index
- database management systems
- sensor networks
- scoring function
- aggregate queries
- bitmap indexes
- real time