XML data processing apparatus, XML data processing method, XML data processing program, and storage medium storing XML data processing program

摘要

PPROBLEM TO BE SOLVED: To provide an apparatus which efficiently performs inquiry processing by eliminating unnecessary reference to links with respect to an inquiry about XML data. PSOLUTION: When XML data to be a retrieval object is registered, an XML data loader part 230 constitutes summary information of XML data and gives a range label to the summary information and stores them in a secondary storage device 130. On retrieval, an inquiry about XML data and summary information are inputted, and an inquiry analysis part 150 converts the inquiry to a tree structure to generate a structural part of an inquiry tree from which a value part is deleted, and an inquiry execution part 170 collates an intermediate inquiry tree and summary information to generate a set of intermediate summary trees and converts it to a set of substantial intermediate trees including data resulting from substantiating the set of intermediate summary trees with respect to the XML data, and a value part corresponding to the set of substantial intermediate trees is used to perform filter processing with respect to the XML data, and an inquiry result is outputted. PCOPYRIGHT: (C)2006,JPO&NCIPI