Keyphrases
- query optimization
- database systems
- cost model
- multidatabase systems
- query processing
- cardinality estimation
- cost estimation
- query plan
- xml data
- queries involving
- query optimizer
- data placement
- join queries
- query execution plans
- database
- query optimizers
- efficient query processing
- continuous queries
- query execution
- data structure
- databases
- execution plan
- recursive queries
- data model
- join operators