285 search results - page 1 / 57 » Optimization of Real Conjunctive Queries |
PODS
1993
ACM
13 years 9 months ago
1993
ACM
PODS
2006
ACM
14 years 5 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...
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 ...
PAKDD
2004
ACM
13 years 11 months ago
2004
ACM
Inductive queries are queries to an inductive database that generate a set of patterns in a data mining context. Inductive querying poses new challenges to database and data mining...
BTW
2009
Springer
13 years 10 months ago
2009
Springer
: Cost-based optimizers in relational databases make use of data statistics to estimate intermediate result cardinalities. Those cardinalities are needed to estimate access plan co...