Direct Perfect Hashing Functions for External Files

Direct Perfect Hashing Functions for External Files

M.V. Ramakrishna (Michigan State University, USA) and Yuchi Bannai (Canon Inc., Japan)
Copyright: © 1991 |Pages: 11
DOI: 10.4018/jdm.1991010103
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Abstract

A file organization scheme based on composite perfect hashing, which guarantees single access retrieval from external files has been proposed recently. The ideal retrieval performance is achieved by using an auxiliary internal table and direct perfect hashing. In this paper, we explore systematic methods of finding direct perfect hashing functions. Experimental results indicate that the proposed methods are practical.

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