java development

Introduction to XML

XML (eXtensible Markup Language), like HTML, is a markup language for marking up the structure of a text document. It is a subset of Standard General Markup Language (SGML). XML is not a programming language like Java or C#. It is developed and maintained by World-Wide Web Consortium (W3C) @ www.w3c.org. (W3C also maintains specifications for HTTP, HTML, XHTML, CSS, among others.)

XML is a family of technologies, which includes:

• XML: the markup language itself.
• DTD (Document Type Definition) and XML Schema: define the structure of an XML document,
• XSL (XML Style sheet Language), XSLT (XSL Transformation), XSL-FO (XSL Formatting Objects): for presentation.
• XPath, XLink, XPointer, XQuery: for locating, linking and query document.
• DOM (Document Object Model), SAX (Simple API for XML): XML parser.
• XQL (XML Query Language), XSQL: for querying databases.