It is a subset of Standard General Markup Language (SGML). It is developed and maintained by World-Wide Web Consortium (W3C) @
(W3C also maintains specifications for HTTP, HTML, XHTML, CSS, among others.) XML is a family of technologies, which includes: I assume that you have some basic understanding of the HTML.
Just the other day I got an email from a user asking if it was possible to use Code Synthesis XSD with a light-weight XML parser that he found instead of Xerces-C .
Out of curiosity I checked the parser’s description and there I saw a number of common traits of most new, fast, and small XML parsers these days: no support for DTD (internal subset) and CDATA sections, limited support for character and entity references.
For example, the tree structure of the "bookstore.xml" is as follows: An XML document comprises of the following basic units: to XML parser or an application program that uses the XML document.
PI can be used for inserting non-XML statements, such as scripts, into the document, to be passed to an application for processing.
It describes the objects (such as elements, attributes, entities) and the relationship of the objects.
It specifies a set of constraints and establishes the trees that are acceptable in an XML document.
The following figure shows the appearance of opening an XML document on a web browser. You can click on the " " and "-" sign to expand and collapse a portion of the tree.It also helps in standardizing a certain class of documents.XML focus on the content of the document and gives no clue on the appearance or presentation.The W3C XML specification defines two types of conforming XML parsers: validating and non-validating (see Section 5.1, “Validating and Non-Validating Processors”).Any parser that wants to be called capable of parsing XML 1.0 documents must at least satisfy the non-validating parser requirements.
, if its structure meets the XML specification, i.e., it is syntactically correct.