Outerjoin Simplification and Reordering for Query Optimization.
César A. Galindo-LegariaArnon RosenthalPublished in: ACM Trans. Database Syst. (1997)
Keyphrases
- query optimization
- database systems
- cost model
- query processing
- cardinality estimation
- multidatabase systems
- query execution
- xml data
- efficient execution
- cost estimation
- semantic query optimization
- selectivity estimation
- query scheduling
- query optimizer
- join queries
- data placement
- continuous queries
- efficient query processing
- query plan
- approximate query answering
- query execution plans
- data mining
- data model
- query execution plan