Keyphrases
- query optimization
- recursive queries
- database systems
- cost model
- multidatabase systems
- cost estimation
- cardinality estimation
- query processing
- query execution
- query scheduling
- semantic query optimization
- query optimizer
- query execution plans
- data placement
- efficient execution
- efficient query processing
- xml data
- datalog programs
- continuous queries
- query optimizers
- execution plan
- query plan
- complex queries
- management system
- data mining
- databases