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2002

Efficient Join-Index-Based Spatial-Join Processing: A Clustering Approach

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Efficient Join-Index-Based Spatial-Join Processing: A Clustering Approach
A join-index is a data structure used for processing join queries in databases. Join-indices use precomputation techniques to speed up online query processing and are useful for data sets which are updated infrequently. The I/O cost of join computation using a join-index with limited buffer space depends primarily on the page-access sequence used to fetch the pages of the base relations. Given a join-index, we introduce a suite of methods based on clustering to compute the joins. We derive upper bounds on the length of the page-access sequences. Experimental results with Sequoia 2000 data sets show that the clustering method outperforms existing methods based on sorting and online-clustering heuristics.
Shashi Shekhar, Chang-Tien Lu, Sanjay Chawla, Siva
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 2002
Where TKDE
Authors Shashi Shekhar, Chang-Tien Lu, Sanjay Chawla, Sivakumar Ravada
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