DASFAA
2009
IEEE
13 years 12 months ago
2009
IEEE
In Deep Web data integration, some Web database interfaces express exclusive predicates of the form Qe = Pi(Pi ∈ P1, P2, . . . , Pm), which permits only one predicate to be selec...
EDBT
2006
ACM
14 years 5 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...
SIGMOD
2002
ACM
14 years 5 months ago
2002
ACM
ICDE
1997
IEEE
14 years 6 months ago
1997
IEEE
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
ICDE
2000
IEEE
14 years 6 months ago
2000
IEEE
ICDE
2007
IEEE
14 years 6 months ago
2007
IEEE
Estimating the selectivity of queries is a crucial problem in database systems. Virtually all database systems rely on the use of selectivity estimates to choose amongst the many ...