12 search results - page 3 / 3 » Selectivity estimators for multidimensional range queries ov... |
JIIS
2006
13 years 4 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...
PVLDB
2008
13 years 4 months ago
2008
Summaries of massive data sets support approximate query processing over the original data. A basic aggregate over a set of records is the weight of subpopulations specified as a ...