Keyphrases
- query result
- sql queries
- query processing
- range queries
- deep web
- xml data
- database server
- data extraction
- xml queries
- result set
- user queries
- multi dimensional
- database
- relational databases
- skyline queries
- confidence intervals
- databases
- join algorithms
- xml documents
- relational database systems
- client server
- metric space
- index structure
- database systems
- query optimization
- knn
- web databases
- continuous queries
- keywords
- search engine