The Generalized Pre-Grouping Transformation: Aggregate-Query Optimization in the Presence of Dependencies.
Aris TsoisTimos K. SellisPublished in: VLDB (2003)
Keyphrases
- query optimization
- database systems
- cost model
- multidatabase systems
- query processing
- cost estimation
- cardinality estimation
- semantic query optimization
- query execution
- query scheduling
- data placement
- query optimizers
- selectivity estimation
- query optimizer
- xml data
- continuous queries
- transformation rules
- efficient execution
- query execution plans
- approximate query answering
- database
- data management
- data mining
- recursive queries
- execution plan
- range queries
- sliding window
- databases