Securing XML documents: the author-X project demonstration

XML is the de facto standard format for data exchange manipulation of structured documents. XML schema provides important structural information of XML documents. Unfortunately, much XML data does not have XML schema or is not accompanied by its XML ...

We study the problem of schema revalidation where XML data known to conform to one schema must be validated with respect to another schema. Such revalidation algorithms have applications in schema evolution, query processing, XML-based programming ...

Up to now many XML query languages, including XPath and XQuery which become the standard of XML query standard by W3C, have been prosposed. However, since the navigational query approach adopted by XPath can only get homogeneous data, it often incurs ...