XML is a language used to store data. XSLT is a language which is used to transform XML into other XML.
It would be harder to describe the similarity between JavaScript and XML. These two languages are for entirely different purposes.
Well-formed XML means that the XML is correct (it has only one root node, and all elements match an end element tag)Valid XML means that the XML can be validated to an XML Schema or DTD, and that all the tags in the XML are also in the Schema or DTD, and in the right place.
When referring to Excel 2007, there are two file types you can use when you save a file, XML and binary. If you save the file as binary, then there is no difference between the two. If you save the file as XML, then the XML file contains XML formatting data (explanation beyond the scope of this question) and the binary file is formatted for computers to read directly.
basikly xhtml is a mics of html and xml. the difference in html and xhtml is that xhtml is a more strict on the syntax and defined as a xml document. xml is a self defined language... in short it is a strikter html in xml format...
An XML attribute is a specified property for a tag with a value. For example, the XML tag "person" could have the attribute "name" with a value of "bob."
You can compare this with English usage. I can say to you, "Jeet yet?" and you would probably understand me to mean, "Did you eat yet?" One of these sentences is valid English, the other is questionable. In the same way you can write valid XML and you can write XML with numerous imperfections. Many XML language processors are capable of understanding both. However, it's safer to write valid XML.
Properties file uses only name value pairs where as xml file uses hierarchical name value and the value can be defined by attributes too.
SGML had a variety of rules that made it difficult to parse correctly, and less legible than XML. XML was made to be more machine and human friendly. Both languages are otherwise remarkably similar, including DTDs and validation, as one would expect, since SGML was the ancestor of XML.
GML is a standard of the OGC and ISO (ISO 19136). G-XML is a standard of the Japanese Standards Association (JSA). Both standards are based on XML for the encoding of geographic information, however, G-XML is focused on location based services. G-XML is written in GML as a GML application schema.
XML (eXtensible Markup Language) is a set of rules for encoding documents. For example, XML can be used to define the rules of a particular file format such as HTML. It is not a programming language. C is a general purpose programming language which is used to write software.
XML (eXtensible Markup Language) is a set of rules for encoding documents. The rules could describe anything from the rules of HTML to various file formats. WSDL (Web Services Description Language) provides a model for describing web services. WSDL uses the XML to specify its rules.