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Title: XTree and XTreeQuery for declarative XML querying
Authors: CHEN ZHUO
Keywords: XTree, XTreeQuery, XML querying
Issue Date: 14-May-2004
Citation: CHEN ZHUO (2004-05-14). XTree and XTreeQuery for declarative XML querying. ScholarBank@NUS Repository.
Abstract: How to query XML documents to extract and restructure the information is an important issue in XML research. Currently, XQuery based on XPath is the most promising standard of W3C. In this thesis, we propose a new set of syntax rules called XTree, which is a generalization of XPath. XTree has a tree structure, and a user can bind multiple variables in one XTree expression. XTree expressions can be used in both querying part and result construction part of a query. Thus, XTree is more compact and convenient to write and understand than XPath. We also develop a query language called XTreeQuery, which is based on XTree expressions. XTreeQuery can avoid nested querying structure, and can handle join, group-by, recursion and update in an easy and direct way. In addition, we have designed algorithms that convert some simple XTreeQuery queries based on XTree expressions to standard XQuery queries.
Appears in Collections:Master's Theses (Open)

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