NDLI: A declustering scheme with guaranteed worst-case additive error O(k/sup 1/(d-1)/) for d-dimensional range queries

Content Provider	IEEE Xplore Digital Library
Author	Chedid, F.B.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Sci., Notre Dame Univ., Zouk Mosbeh, Lebanon (Chedid, F.B.)
Abstract	Declustering schemes for range queries have been widely used in parallel storage systems to allow fast access to multidimensional data. A declustering scheme distributes data blocks among several devices (e.g., disks) so that the number of parallel block accesses needed per query is minimized. Given a system of k disks, a query that accesses m blocks needs a number of parallel block accesses that is at least OPT=/spl lceil/m/k/spl rceil/. In literature, the performance of any declustering scheme is measured by its worst-case additive deviation from OPT. A number of asymptotically optimal declustering schemes are known for 2-dimensional range queries. The case of higher dimensions appears intrinsically very difficult. None of the proposed schemes provide any non-trivial performance guarantees in higher dimensions. In this paper, we describe a declustering scheme which has guaranteed worst-case performance of OPT+O(k/sup 1/(d-1)/) parallel block accesses for d dimensions. Our scheme is a generalization of a 2-dimensional scheme proposed by Atallah and Prabhakar in 2000.
Sponsorship	IEEE Comput. Soc. TCDP and TCPP Fukuoka Inst. of Technol. (FIT)
Starting Page	625
Ending Page	628
File Size	182103
Page Count	4
File Format	PDF
ISBN	0769522815
ISSN	15219097
DOI	10.1109/ICPADS.2005.16
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-20
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optimized production technology Multidimensional systems Delay Computer errors Computer science Relational databases Spatial databases Visual databases Visualization Geographic Information Systems
Content Type	Text
Resource Type	Article
Subject	Hardware and Architecture

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