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A Sufficient and Necessary Condition for the Consistency of XML DTDs

机译:XML DTD一致性的充要条件

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摘要

Recently, XML has emerged as a standard for representing and exchanging data on the World Wide Web. As a result, there is a trend of increasing amount of XML documents that publish information on the Web from various data sources. A Document Type Definition (DTD) describes the structure of a set of similar XML documents and serves as the schema for XML documents. The World Wide Web Consortium has denned the grammar for specifying DTDs; however, even a syntactically correct DTD might be inconsistent in the sense that there exist no XML documents conforming to the structure imposed by the DTD. In this paper, we formalize the notion of the consistency of DTDs, and identify a sufficient and necessary condition for a DTD to be consistent.
机译:最近,XML已经成为用于在万维网上表示和交换数据的标准。结果,趋势是越来越多的XML文档从各种数据源在Web上发布信息。文档类型定义(DTD)描述了一组相似的XML文档的结构,并用作XML文档的架构。万维网联盟拒绝了指定DTD的语法。但是,就语法而言,即使在语法上正确的DTD也可能不一致,因为不存在符合DTD所强加的结构的XML文档。在本文中,我们对DTD一致性的概念进行了形式化,并确定了DTD一致性的充分必要条件。

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