XML stands for eXtensible Markup Language, developed starting in 1996 and received recognition from the W3C in February 1998. The technology used in XML is not really new technology, but is derived from SGML that has been developed in the early 80′s and has been widely used in technical documentation of large-scale projects. When HTML was developed in 1990, the originator of the most important parts of adopting XML in SGML and HTML based on the development generates markup language that is not less great with SGML.  XML language is still very rarely used because the level of difficulty and use a special.  To create a XML script that is needed is a software editor XML Editor which wills simplify us in making the XML format.

XML for the moment not a substitute for HTML. Each developed for different purposes.  If  HTML is used to display information and focuses on how information is visible, XML describes the structure of information and focus on the information itself. XML is especially needed to compile and present information in a format that does not contain a standard format likes headings, paragraphs, tables and so forth. For example, what if we want to store and present information we can store it in xml format. Similar to HTML, text-based XML file so that if necessary we can read it without needing the help of special software. This is easier for application developers who use XML to debug the program. XML is more flexible than HTML in terms of ability to store information and data. In XML we can store data in both the attribute and as a content element that is placed among the opening tag and closing tag. Another advantage of XML is that the information held can be used interchangeably from one system to another system of different platforms. For example, from Windows to Unix, or from a PC to Machintosh even from the internet to mobile phones with WAP technology.

Building a website with XML-based script is not an easy job it requires special skills. With the help of software XML Editor is available on Internet, creating and editing a simple XML and XML that we make will have a Valid XML.