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ICDE
2002
IEEE
146views Database» more  ICDE 2002»
14 years 10 months ago
Query Estimation by Adaptive Sampling
The ability to provide accurate and efficient result estimations of user queries is very important for the query optimizer in database systems. In this paper, we show that the tra...
Yi-Leh Wu, Divyakant Agrawal, Amr El Abbadi
SIGMOD
2007
ACM
169views Database» more  SIGMOD 2007»
14 years 8 months ago
ConEx: a system for monitoring queries
We present a system, ConEx, for monitoring query execution in a relational database management system. ConEx offers a unified view of query execution, providing continuous visual ...
Chaitanya Mishra, Maksims Volkovs
DEEC
2005
IEEE
14 years 2 months ago
Using Semantic Information to Improve Transparent Query Caching for Dynamic Content Web Sites
In this paper, we study the use of semantic information to improve performance of transparent query caching for dynamic content web sites. We observe that in dynamic content web a...
Gokul Soundararajan, Cristiana Amza
ICDE
2008
IEEE
131views Database» more  ICDE 2008»
14 years 10 months ago
Parallel Evaluation of Composite Aggregate Queries
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
Lei Chen 0003, Christopher Olston, Raghu Ramakrish...
VLDB
2005
ACM
115views Database» more  VLDB 2005»
14 years 2 months ago
KLEE: A Framework for Distributed Top-k Query Algorithms
This paper addresses the efficient processing of top-k queries in wide-area distributed data repositories where the index lists for the attribute values (or text terms) of a query...
Sebastian Michel, Peter Triantafillou, Gerhard Wei...