The Query and Application of XML Data Based on XQuery

The popularity of the Internet and the rapid development of Web technology and its application make the XML technology developed quickly. More and more programmers store the data in XML form. With the large number of XML documents, applications need to continue to deal with XML data, access and update the XML data. Then XQuery is emerged. This paper introduces the XQuery language briefly, discusses the applications of XQuery language in all aspects, and point out the inadequacies of XQuery.