808 search results - page 9 / 162 » On the Estimation of Join Result Sizes |
JIIS
2006
14 years 9 months ago
2006
A join of two relations in real databases is usually much smaller than their cartesian product. This means that most of the combinations of tuples in the crossproduct of the respe...
SSDBM
2000
IEEE
15 years 1 months ago
2000
IEEE
Efficient evaluation of spatial join is an important issue in spatial databases. The traditional evaluation strategy is to perform a join of “minimum bounding rectangles” (mbr...
ICDE
2009
IEEE
15 years 4 months ago
2009
IEEE
— Information extraction (IE) systems are trained to extract specific relations from text databases. Real-world applications often require that the output of multiple IE systems...
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SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
One of the most common operations in analytic query processing is the application of an aggregate function to the result of a relational join. We describe an algorithm for computi...
WWW
2007
ACM
15 years 10 months ago
2007
ACM
Most RDF query languages allow for graph structure search through a conjunction of triples which is typically processed using join operations. A key factor in optimizing joins is ...