Sample synopses for approximate answering of group-by queries.
Philipp RöschWolfgang LehnerPublished in: EDBT (2009)
Keyphrases
- approximate answers
- aggregate queries
- approximate query answering
- approximate query processing
- complex queries
- exact answers
- query answers
- query optimization
- selectivity estimation
- answering queries
- efficient computation
- query processing
- sample size
- query answering
- efficient processing
- database queries
- probabilistic databases
- data cube
- query evaluation
- knn
- query language