http://peertopatent.org/patent/77/prior_art/list Disclosed are a method, information processing system, and computer readable medium for processing queries. The method includes receiving a data query for a set of hierarchical markup documents. At least one query path expression is extracted from the data query. The query path is processed against at least one shared hierarchical markup document in a plurality of shared hierarchical markup documents. The plurality of shared hierarchical documents is associated with the set of hierarchical markup documents. In response to the shared hierarchical markup document completely matching the query path expression, a query result for the data query is generated. The query result is based on the processing of the query path expression against at least one of the shared hierarchical markup document and the difference hierarchical markup document. en-us Processing queries on hierarchical markup data using shared hierarchical markup trees Title: Customizable detection of changes for XML documents using XPath expressions<br/>ISBN: <br/>Description: Change detection in XML documents is an important task in the context of query systems. In this paper, we present CustX- Diff, a customizable change detection approach for XML documents based on X-Diff [6]. CustX-Diff performs the change detection operation simultaneosly with the XPath based filtering of XML document parts. The class of XPath expressions used is the tree patterns subset of XPath. For the embedding of simple paths into XPath expressions during the difference operation, a dynamic programming approach is proposed. Comparative performance results with respect to the original X-Diff [6] approach demonstrate the efficiency of the proposed method. Tue, 22 Jul 2008 13:43:48 -0700 http://peertopatent.org/prior_art/228/detail