Volker John

XML is a metalanguage that's used to describe a language grammar. Documents that comply with a grammar formulated in XML use tags to distinguish between the actual content and its semantically relevant markup. XML defines abstract semantics in contrast to operational ones (which can be derived from them). An example of the latter is the presentation-oriented HTML. XML documents are well suited for publication in different media such as books, CDs and, of course, the Internet. A second and, at present, more important usage is applying XML to Enterprise Application Integration (EAI): messages between applications running different tasks (sometimes even in different companies) are encoded using XML. XML, a standard for data exchange and document markup, is infusing the discussion about appropriate storage mechanisms with new momentum. After all manipulating XML in the ... (more)