XML查询语言XQuery扩展研究

Extension Research on XML XQuery

XML自1998年由W3C提出之后,已经成为因特网上数据表示和数据交换的新标准,受到越来越多的关注。各行各业都在采用XML来描述本领域的信息,随着XML的普及,用户对XML文档查询的要求会越来越高。XML查询语言XQuery是导航语言XPath的扩展,它是一种语法简单灵活且表现力强大的功能性语言。XQuery与XML数据结构有内在的联系,可以方便地编写业务逻辑,并且本质上就可以操作XML数据。本文的主要目的是对XQuery现状及前景进行归纳并探讨了对XQuery进行扩展的可行性,提出了一种扩展思路。

Since XML is introduced by the W3C in 1998, it has become a data representation and data exchange new standards on internet. More and more businesses are using XML to describe the information in the field, with the popularity of XML, the user queries on the XML document will place increasing demands.XQuery,the XML query language, is a language extension of XPath navigation, it is a simple,flexible and expressive syntax powerful language.XQuery and XML data structures are intrinsically linked, you can easily write business logic, and can operate on the nature of XML data. The main purpose of this paper is to present situation and prospects of Query, and summarized and discussed the feasibility of the XQuery extensions, finally proposed an extension ideas.