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Building Signature-Trees on Path Signatures in Document Databases

Building Signature-Trees on Path Signatures in Document Databases
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Author(s): Yangjun Chen (University of Winnipeg, Canada) and Gerald Huck (IPSI Institute, Germany)
Copyright: 2003
Pages: 21
Source title: Effective Databases for Text & Document Management
Source Author(s)/Editor(s): Shirley Becker (Northern Arizona University, USA)
DOI: 10.4018/978-1-93177-747-6.ch005

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Abstract

Java is a prevailing implementation platform for XML-based systems. Several high-quality in-memory implementations for the standardized XML-DOM API are available. However, persistency support has not been addressed. In this chapter, we discuss this problem and introduce PDOM (persistent DOM) to accommodate documents as permanent object sets. In addition, we propose a new indexing technique: path signatures to speed up the evaluation of path-oriented queries against document object sets, which is further enhanced by combining the technique of signature-trees with it to expedite scanning of signatures stored in a physical file.

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