Continuous and Progressive XML Query Processing and its Applications

Since.XML.technologies.have.become.a.standard.for.data.representation,.a.great.amount.of.discussion. has. been. generated. by. the. persisting. open. issues. and. their. possible. solutions.. In. this. chapter,. the. authors consider the design space for XML query processing techniques that can handle ad hoc and continuous.XPath.or.XQuery queries over XML.data.streams..This.chapter.presents. the.state-of-art. techniques in continuous and progressive XML query processing. They also discuss several open issues and.future.trends.