625 search results - page 7 / 125 » Genetic algorithms for large join query optimization |
GIS
2006
ACM
14 years 8 months ago
2006
ACM
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
CIKM
2005
Springer
14 years 1 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
CIKM
1994
Springer
13 years 11 months ago
1994
Springer
TID hash joins are a simple and memory-efficient method for processing large join queries. They are based on standard hash join algorithms but only store TID/key pairs in the hash...
ICDM
2002
IEEE
14 years 17 days ago
2002
IEEE
The similarity join has become an important database primitive to support similarity search and data mining. A similarity join combines two sets of complex objects such that the r...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— Uncertain data is quite common nowadays in a variety of modern database applications. At the same time, the join operation is one of the most important but expensive operations...