262 search results - page 32 / 53 » Spatio-temporal join selectivity |
MFDBS
1991
13 years 11 months ago
1991
We study an approach to relational databases which treats relations not as subsets of a Cartesian product but as subsets of some domain { a partially ordered space of descriptions...
PVLDB
2010
13 years 6 months ago
2010
This paper addresses the problem of explaining missing answers in queries that include selection, projection, join, union, aggregation and grouping (SPJUA). Explaining missing ans...
SIGMOD
2010
ACM
14 years 14 days ago
2010
ACM
The probabilistic threshold query (PTQ) is one of the most common queries in uncertain databases, where all results satisfying the query with probabilities that meet the threshold...
GPCE
2009
Springer
14 years 7 days ago
2009
Springer
Synchronization is a good candidate for an aspect in aspectoriented programming (AOP) since programmers have to choose the best granularity of synchronization for the underlying h...
ICDT
2009
ACM
14 years 8 months ago
2009
ACM
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...