482 search results - page 14 / 97 » Selectivity Estimation in Spatial Databases |
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
We study the problem of estimating selectivity of approximate substring queries. Its importance in databases is ever increasing as more and more data are input by users and are in...
SIGMOD
1996
ACM
14 years 2 days ago
1996
ACM
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...
ADC
2004
Springer
14 years 1 months ago
2004
Springer
Many spatio-temporal applications involve managing and querying moving objects. In such an environment, predictive spatio-temporal queries become an important query class to be pr...
VLDB
1997
ACM
14 years 2 days ago
1997
ACM
The result size of a query that involves multiple attributes from the same relation depends on these attributes’ joint data distribution,i.e., the frequencies of all combination...
ICDE
2004
IEEE
14 years 9 months ago
2004
IEEE
An ever increasing amount of valuable information is stored in Web databases, "hidden" behind search interfaces. To save the user's effort in manually exploring eac...