279 search results - page 29 / 56 » Towards Adaptive Costing of Database Access Methods |
CIKM
2005
Springer
14 years 2 months ago
2005
Springer
Accurately and efficiently estimating the number of distinct values for some attribute(s) or sets of attributes in a data set is of critical importance to many database operation...
ICDE
2003
IEEE
14 years 10 months ago
2003
IEEE
We present a query architecture in which join operators are decomposed into their constituent data structures (State Modules, or SteMs), and dataflow among these SteMs is managed ...
IJOCI
2010
13 years 5 months ago
2010
We present a time-efficient approach to index objects moving on the plane to efficiently answer range queries about their future positions. Each object is moving with non small ve...
ICDCS
2008
IEEE
14 years 3 months ago
2008
IEEE
Distributed stream processing systems (DSPSs) have many important applications such as sensor data analysis, network security, and business intelligence. Failure management is ess...
VLDB
1995
ACM
14 years 1 days ago
1995
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...