Keyphrases
- query answering
- data cube
- data warehouse
- data exchange
- multi dimensional
- data integration
- range sum queries
- aggregate queries
- data complexity
- answering queries
- conjunctive queries
- incomplete information
- integrity constraints
- main idea consists
- on line analytical processing
- query rewriting
- range queries
- query answers
- multidimensional data
- decision support
- data management
- data structure
- database
- space efficient