1004 search results - page 145 / 201 » Safe Constraint Queries |
ICDE
2010
IEEE
14 years 8 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
SENSYS
2004
ACM
14 years 2 months ago
2004
ACM
Wireless sensor networks offer the potential to span and monitor large geographical areas inexpensively. Sensors, however, have significant power constraint (battery life), makin...
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
Snapshot isolation (SI) provides significantly improved concurrency over 2PL, allowing reads to be non-blocking. Unfortunately, it can also lead to non-serializable executions in ...
SIGIR
2005
ACM
14 years 2 months ago
2005
ACM
This paper proposes GBM (gravitation-based model), a physical model for information retrieval inspired by Newton’s theory of gravitation. A mapping is built in this model from c...
ISF
2010
13 years 6 months ago
2010
Much of the literature on responsibility in the IT field addresses the responsibilities of members of the IT profession. In this paper, we investigate to what extent the responsibi...