A system for 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, Tokyo, Japan;Graduate School of Information Systems, The University of Electro-Communications, Tokyo, Japan;Graduate School of Information Systems, The University of Electro-Communications, Tokyo, Japan
Venue:
DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part II
Year:
2010

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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 I

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Abstract

With storing XML data as a type of a column, relational databases have become more powerful. A relational database including both XML data and relational data is termed a hybrid XML-Relational database (XML-RDB) in this paper. Because existing keyword-search techniques on either relational databases (RDB) or XML databases (XML DB) cannot get appropriate results, we propose a new method of keyword search on XML-RDB to get more reasonable results than existing methods. To realize it, a new join operator, named XRjoin, is designed and utilized to join XML data with relational data. We construct a demo system by using DB2 v9.5, and our experiments show that the system can find the answers that we want to get.