Keyphrases
- query optimization
- approximate query answering
- data model
- database systems
- query execution
- cost model
- xml data
- query processing
- relational databases
- relational data
- on line analytical processing
- data warehouse
- multidatabase systems
- join operators
- star schema
- cost estimation
- cardinality estimation
- olap queries
- query execution plans
- data warehousing
- data cube
- relational model
- query scheduling
- databases
- data mining
- execution plan
- database management systems
- recursive queries
- data placement
- continuous queries
- query language
- selectivity estimation
- query plan
- query optimizer
- efficient query processing
- xml queries
- relational queries
- data partitioning
- database schema
- data integration
- business intelligence
- response time
- data sources
- transaction management