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The process of checking to see if a XML document conforms to a schema is called validation, which is separate from XML's core concept of syntactic well-formedness.All XML documents must be well-formed, but it is not required that a document be valid unless the XML parser is "validating", in which case the document is also checked for conformance with its associated schema.
XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium , specifies how to formally describe the elements in an Extensible Markup Language document. It can be used by programmers to verify each piece of item content in a document, to assure it adheres to the description of the element it is placed in. [ 1 ]
The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD). Markup validation is an important step towards ensuring the technical quality of web pages.
XML validation is the process of checking a document written in XML (eXtensible Markup Language) to confirm that it is both well-formed and also "valid" in that it follows a defined structure. A well-formed document follows the basic syntactic rules of XML, which are the same for all XML documents. [ 1 ]
Schema.org is an initiative launched on June 2, 2011, by Bing, Google and Yahoo! [ 3 ] [ 4 ] [ 5 ] (operators of the world's largest search engines at that time) [ 6 ] to create and support a common set of schemas for structured data markup on web pages.
Document Schema Definition Languages (DSDL) is a framework within which multiple validation tasks of different types can be applied to an XML document in order to achieve more complete validation results than just the application of a single technology. It is specified as a multi-part ISO/IEC Standard, ISO/IEC 19757. [1]
Definition lists are created with the wikimarkup ; to define a definition list and : to define the item in the list. This diagnostic results when the : is missing. Indentation is created using the : markup. This creates a definition list with no child element. T6521; This also occurs when ; is misused to bold a line. Use the wikimarkup ''' to ...
Open Scripture Information Standard (OSIS), an XML-markup schema that defines tags for marking up Bibles, theological commentaries, and other related literature. OpenDocument (ODF): a document file format used for describing electronic documents; OpenMath – a markup language for mathematical formulae which can complement MathML.