Keyword search on hybrid XML-relational databases using XRjoin

Authors:
Liru Zhang;Tadashi Ohmori;Mamoru Hoshi
Affiliations:
Graduate School of Information Systems, The University of Electro-Communications, Chofu City, Tokyo, Japan;Graduate School of Information Systems, The University of Electro-Communications, Chofu City, Tokyo, Japan;Graduate School of Information Systems, The University of Electro-Communications, Chofu City, Tokyo, Japan
Venue:
DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part I
Year:
2010

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A system for keyword search on hybrid XML-relational databases using XRjoin

DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part II

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Abstract

Keyword search on databases has been popularized since it enables users to get information under databases without any knowledge of the schema or query languages. There are a number of keyword-search techniques on both RDB and XML DB, but those may still miss appropriate answers when some substructures of XMLs are related by relational linkage information. To overcome this problem, we consider integration of XML and relational data and this paper proposes a new method of keyword search on hybrid XML-Relational databases. As a new concept, a new join operator, named XRjoin, is designed and utilized to join XML with relational data. Experiments on DB2 v9.5 show effects of our proposal.