712 search results - page 125 / 143 » Decoupled Query Optimization for Federated Database Systems |
SIGMOD
2010
ACM
14 years 8 months ago
2010
ACM
Virtually all histograms store for each bucket the number of distinct values it contains and their average frequency. In this paper, we question this paradigm. We start out by inv...
81
Voted
SSDBM
2003
IEEE
15 years 2 months ago
2003
IEEE
String data is ubiquitous, and its management has taken on particular importance in the past few years. Approximate queries are very important on string data especially for more c...
167
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VLDB
2007
ACM
15 years 9 months ago
2007
ACM
We present STAR, a self-tuning algorithm that adaptively sets numeric precision constraints to accurately and efficiently answer continuous aggregate queries over distributed data...
184
Voted
SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
Labeling schemes lie at the core of query processing for many XML database management systems. Designing labeling schemes for dynamic XML documents is an important problem that ha...
AOSD
2007
ACM
15 years 1 months ago
2007
ACM
Efficient data retrieval from databases is a significant issue of the design of persistent systems. We propose an aspect oriented persistent system named AspectualStore. Aspectual...