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SIGMOD
2009
ACM
202views Database» more  SIGMOD 2009»
15 years 12 months ago
ZStream: a cost-based query processor for adaptively detecting composite events
Composite (or Complex) event processing (CEP) systems search sequences of incoming events for occurrences of userspecified event patterns. Recently, they have gained more attentio...
Yuan Mei, Samuel Madden
SIGMOD
2006
ACM
150views Database» more  SIGMOD 2006»
15 years 12 months ago
Automatic physical design tuning: workload as a sequence
The area of automatic selection of physical database design to optimize the performance of a relational database system based on a workload of SQL queries and updates has gained p...
Sanjay Agrawal, Eric Chu, Vivek R. Narasayya
VLDB
2005
ACM
125views Database» more  VLDB 2005»
15 years 5 months ago
Rewriting XPath Queries Using Materialized Views
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
Wanhong Xu, Z. Meral Özsoyoglu
SIGMOD
2004
ACM
147views Database» more  SIGMOD 2004»
15 years 12 months ago
Robust Query Processing through Progressive Optimization
Virtually every commercial query optimizer chooses the best plan for a query using a cost model that relies heavily on accurate cardinality estimation. Cardinality estimation erro...
Volker Markl, Vijayshankar Raman, David E. Simmen,...
ICDE
2007
IEEE
132views Database» more  ICDE 2007»
16 years 1 months ago
XPlainer: Visual Explanations of XPath Queries
The popularity of XML has motivated the development of novel XML processing tools many of which embed the XPath language for XML querying, transformation, constraint specification...
Mariano P. Consens, John W. S. Liu, Flavio Rizzolo