XML is the latest platform-independent and content-dependent technology available for Internet development. XML is the tool of choice for distributing structured information in this age. XML not only fulfills the needs of web authors but also those of anyone interested in publishing. Oracle, IBM and Microsoft are coming out with XML-related software and this gives sufficient indications about the future of XML in the IT industry. This article covers such topics as SGML, HTML and XML, What is DTD - Document Type Definition, Valid and Well-formed XML, Example XML Documents and analysis, and Software for XML.
This article provides a technical introduction to XML with an eye towards guiding the reader to appropriate sections of the XML specification when greater technical detail is desired. This introduction is geared towards a reader with some HTML or SGML experience, although that experience is not absolutely necessary. The XML Link and XML Style specifications are also briefly outlined.
This introduction to XML presents the Extensible Markup Language at a reasonably technical level for anyone interested in learning more about structured documents. In addition to covering the XML 1.0 Specification, this article outlines related XML specifications, which are evolving. The article is organized in four main sections plus an appendix.