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» GUC-Secure Join Operator in Distributed Relational Database
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DEXA
2004
Springer
91views Database» more  DEXA 2004»
14 years 10 days ago
Efficient Processing of Distributed Iceberg Semi-joins
The Iceberg SemiJoin (ISJ) of two datasets R and S returns the tuples in R which join with at least k tuples of S. The ISJ operator is essential in many practical applications incl...
Mohammed Kasim Imthiyaz, Dong Xiaoan, Panos Kalnis
ICDE
2006
IEEE
156views Database» more  ICDE 2006»
14 years 10 months ago
Reasoning About Approximate Match Query Results
Join techniques deploying approximate match predicates are fundamental data cleaning operations. A variety of predicates have been utilized to quantify approximate match in such o...
Sudipto Guha, Nick Koudas, Divesh Srivastava, Xiao...
PVLDB
2008
71views more  PVLDB 2008»
13 years 8 months ago
Read-optimized databases, in depth
Recently, a number of papers have been published showing the benefits of column stores over row stores. However, the research comparing the two in an "apples-to-apples" ...
Allison L. Holloway, David J. DeWitt
EDBT
2010
ACM
185views Database» more  EDBT 2010»
14 years 3 months ago
Optimizing joins in a map-reduce environment
Implementations of map-reduce are being used to perform many operations on very large data. We examine strategies for joining several relations in the map-reduce environment. Our ...
Foto N. Afrati, Jeffrey D. Ullman
ICDE
2008
IEEE
140views Database» more  ICDE 2008»
14 years 10 months ago
Top-k Spatial Joins of Probabilistic Objects
Probabilistic data have recently become popular in applications such as scientific and geospatial databases. For images and other spatial datasets, probabilistic values can capture...
Vebjorn Ljosa, Ambuj K. Singh