Keyphrases
- query optimization
- database systems
- cost model
- multidatabase systems
- query execution
- query processing
- cost estimation
- xml data
- semantic query optimization
- query scheduling
- cardinality estimation
- big data
- continuous queries
- data placement
- query execution plans
- query optimizers
- query plan
- database
- execution plan
- recursive queries
- selectivity estimation
- relational databases
- data structure