Keyphrases
- query processing
- skyline queries
- result set
- skyline computation
- efficient processing
- query result
- query evaluation
- index structure
- aggregate queries
- distributed environment
- database systems
- cost model
- range queries
- query language
- data objects
- user queries
- similarity search
- data distribution
- query optimization
- approximate answers
- skyline points
- aggregation queries
- metric space
- user preferences
- xml data
- multi dimensional
- complex queries
- database queries
- databases
- database
- join algorithms