Query Size Estimation for Joins Using Systematic Sampling.
Anne H. H. NguBanchong HarangsriJohn ShepherdPublished in: Distributed Parallel Databases (2004)
Keyphrases
- query evaluation
- query processing
- response time
- join queries
- database
- relevance feedback
- data sources
- query expansion
- query optimization
- internal memory
- user queries
- retrieval systems
- join processing
- cost model
- random sampling
- join operations
- query optimizer
- database queries
- object retrieval
- random sample
- query execution
- join algorithms
- complex queries
- join operator
- maintenance cost
- aggregate queries
- importance sampling
- path expressions
- query result
- query plan
- range queries
- query language
- databases