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» Spatio-temporal join selectivity
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CIKM
2005
Springer
14 years 1 months ago
Selectivity-based partitioning: a divide-and-union paradigm for effective query optimization
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
Neoklis Polyzotis
AOSD
2006
ACM
14 years 1 months ago
A join point for loops in AspectJ
The current AspectJ join points represent locations in the code that are at the interface of the Java objects. However, not all the “things that happen”1 happen at the interfa...
Bruno Harbulot, John R. Gurd
VLDB
1989
ACM
140views Database» more  VLDB 1989»
13 years 11 months ago
The Effect of Bucket Size Tuning in the Dynamic Hybrid GRACE Hash Join Method
In this paper, we show detailed analysis and performance evaluation of the Dynamic Hybrid GRACE Hash Join Method (DHGH Method) when the tuple distribution in buckets is unbalanced...
Masaru Kitsuregawa, Masaya Nakayama, Mikio Takagi
DATESO
2008
131views Database» more  DATESO 2008»
13 years 9 months ago
Towards Cost-based Optimizations of Twig Content-based Queries
Abstract In recent years, many approaches to indexing XML data have appeared. These approaches attempt to process XML queries efficiently and sufficient query plans are built for t...
Michal Krátký, Radim Baca
VLDB
2005
ACM
105views Database» more  VLDB 2005»
14 years 1 months ago
View Matching for Outer-Join Views
Prior work on computing queries from materialized views has focused on views defined by expressions consisting of selection, projection, and inner joins, with an optional aggrega...
Per-Åke Larson, Jingren Zhou