251 search results - page 50 / 51 » Optimizing recursive queries in SQL |
SSDBM
2005
IEEE
13 years 11 months ago
2005
IEEE
This paper introduces a framework for Phenomena Detection and Tracking (PDT, for short) in sensor network databases. Examples of detectable phenomena include the propagation over ...
CCS
2005
ACM
13 years 11 months ago
2005
ACM
Policy enforcement is an integral part of many applications. Policies are often used to control access to sensitive information. Current policy specification languages give users ...
ICALP
2003
Springer
13 years 11 months ago
2003
Springer
Suppose we have n algorithms, quantum or classical, each computing some bit-value with bounded error probability. We describe a quantum algorithm that uses O( √ n) repetitions of...
SIGMOD
2009
ACM
14 years 6 months ago
2009
ACM
In the rank join problem we are given a relational join R1 1 R2 and a function that assigns numeric scores to the join tuples, and the goal is to return the tuples with the highes...
ISCI
2007
13 years 6 months ago
2007
Selectivity estimation is an important step of query optimization in a database management system, and multidimensional histogram techniques have proved promising for selectivity ...