Daniela Florescu

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Extensible Markup Language, or XML, is more than a simple syntax for Internet transport. It entails a new way of thinking about information. Different communities embrace the language for different reasons. Its platform and vendor neutrality make it a natural format for Service Oriented Architectures and Web Services. Its simple syntax is widespread and its schema flexibility makes XML attractive. A widespread misconception says, "XML is only a syntax." While it's true that the XML 1.0 standard proposed in 1997 was simply a syntax for a file, XML has evolved beyond that humble beginning. This article studies: The data model The type system and processing languages underlying XML as an information model The relationships between components The potential impact components have on existing IT architectures XQuery, the new declarative XML processing language being standa... (more)