Much of the world's advanced data processing applications are now dependant on eXtensible Markup Language (XML), from publishing to medical information storage. Therefore, XML has become a de facto standard for data exchange and representation on the World Wide Web and in daily life. Applications and Structures in XML Processing: Label Streams, Semantics Utilization and Data Query Technologies reflects the significant research results and latest findings of scholars' worldwide, working to explore and expand the role of XML. This collection represents an understanding of XML processing technologies in connection with both advanced applications and the latest XML processing technologies that is of primary importance. It provides the opportunity to understand topics in detail and discover XML research at a comprehensive level.