how are sgml html and xml related?
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HTML and XML are both descendants of an earlier markup language called SGML (Standard Generalized Markup Language). SGML is a complicated set of rules that define document structures. XML is a subset of SGML that does the same thing, using fewer rules.
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Per the Adobe InDesign Markup Language Cookbook, “IDML is an XML-based format for representing InDesign content. ... With InDesign, users can create and modify documents, graphics, images, visual components, and other document items. IDML (. idml) files are InDesign Markup Language documents.
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There are two different levels at which UML and XML can be mapped: UML can be used to model the structure of XML documents directly. XML schemas can be generated for the purpose of validating the documents, but they are provided as a convenience for application developers. ... UML can be used to model an XML schema.
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SGML is the forerunner of HTML and XML. It was invented in the 1960s and fully standardized by the ISO in 1986. The markup looks a lot like XML or HTML — angle brackets are used to define opening and closing tags, which set off various elements of a document.
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FrameMaker has two ways of approaching documents: structured and unstructured. ... Structured FrameMaker uses SGML and XML concepts. The author works with an EDD (Element Definition Document), which is a FrameMaker-specific DTD (Document Type Definition).
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HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visual or audible web pages.
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A main difference between HTML and WML is that the basic unit of navigation in HTML is a page, while that in WML is a card. A WML file can contain multiple cards and they form a deck. When a WML page is accessed from a mobile phone, all the cards in the page are downloaded from the WAP server.
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HTML5 uses web SQL databases, application cache for temporarily storing data, meanwhile, in HTML, only browser cache could be utilized for this purpose. In HTML5, inline MathML and SVG can be used in text whereas this wasn't possible in HTML. ... The older version of HTML is less mobile friendly.
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HTML is static because it is used to display data. XML is dynamic because it is used to transport data. HTML does not preserve whitespaces. XML preserve whitespaces.
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['Identifier.', 'Id.', 'Name.', 'Link.', 'DOM.', 'XPath.', 'CSS.', 'UI-element.']
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Differences between an XML Schema Definition (XSD) and Document Type Definition (DTD) include: XML schemas are written in XML while DTD are derived from SGML syntax. ... XML schemas allow support for namespaces while DTD does not. XML schemas define number and order of child elements, while DTD does not.
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['HTML – Hypertext Markup Language.', 'KML – Keyhole Markup Language.', 'MathML – Mathematical Markup Language.', 'SGML – Standard Generalized Markup Language.', 'XHTML – eXtensible Hypertext Markup Language.']
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You can import data from any web page using a little function called ImportXML , and once you master it you'll feel like a certified Sheets Wizard. ImportXML pulls information from any XML field—that is, any field bracketed by a <tag> and a </tag> .
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SGML provides a way to define markup languages and sets the standard for their form. In other words, SGML states what some languages can or cannot do, what elements must be included, such as tags, and the basic structure of the language. ... HTML is the markup language that creates the form and appearance of the web page.
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['The entire document is a document node.', 'Every XML element is an element node.', 'The text in the XML elements are text nodes.', 'Every attribute is an attribute node.', 'Comments are comment nodes.']
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HTML5 supports SVG (Scalable Vector Graphics), canvas, and other virtual vector graphics, whereas in HTML, using vector graphics was only possible by using it in conjunction with different technologies like Flash, VML (Vector Markup Language), or Silverlight. ... HTML5 is not based on SGML.
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PDF versus XML XML, the eXtensible Markup Language, is a data format that can be used to describe the content of documents (similar to SGML). ... XML does not really compete with PDF, it enhances it. While XML describes the content of a document, PDF describes its appearance.