<XML><RECORDS><RECORD><REFERENCE_TYPE>3</REFERENCE_TYPE><REFNUM>7841</REFNUM><AUTHORS><AUTHOR>Pankowski,T.</AUTHOR><AUTHOR>Hunt,E.</AUTHOR></AUTHORS><YEAR>2005</YEAR><TITLE>Data Merging in Life Science Data Integration Systems</TITLE><PLACE_PUBLISHED>Intelligent Information Systems 2005, Advances in Soft Computing </PLACE_PUBLISHED><PUBLISHER>Springer</PUBLISHER><LABEL>Pankowski:2005:7841</LABEL><KEYWORDS><KEYWORD>XML</KEYWORD></KEYWORDS<ABSTRACT>An index-driven integration system provides access to a multitude of data sources: it uses pre-compiled indexes covering content of these sources. Such a scenario is especially attractive in life science applications which integrate data from hundreds of very valuable carefully maintained databases. A key bottleneck in building such systems is data merging where partial answers obtained from different data sources are to be merged and the problem of overlapping data should be solved. In response to a query the most informative redundancy-free answer should be constructed. In the paper we propose a formal foundation for merging XML-like data and discuss indexing support for data merging. </ABSTRACT></RECORD></RECORDS></XML>