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This presentation provides a technical overview of BEA Liquid Data for WebLogic, a relatively new product from BEA Systems that provides enterprise information integration capabilities to enterprise applications that are built and deployed using the BEA WebLogic Platform. Liquid Data takes an XML-centric approach to tackling the long-standing problem of integrating data from disparate data sources and making that information easily accessible to applications. In particular, Liquid Data uses the forthcoming XQuery language standard as the basis for defining integrated views of enterprise data and querying over those views. We provide a brief overview of the Liquid Data product architecture and then discuss some of the query processing technology that lies at the heart of the product.