Chủ Nhật, 25 tháng 3, 2012

How to Understand the Relationship Between SGML, HTML and XML

When we demeanour during , and , we could cruise this a family grouping. SMGL, HTML and XML are all . The tenure markup gets the base from editors creation revisions to writer‚s manuscripts. An , when reviewing the content, will ’mark up‚ the publishing to prominence certain fields. In , a markup denunciation is a set of difference and black that prominence content to conclude it for a web document. For example, when formulating an Internet page, we wish to be means the apart paragraphs and put letters in a . This is achieved by a markup language. Once we know the roles SGML, HTML and play in web page design, we will see the reciprocity these graphic languages have to any other. The attribute between SGML, HTML and XML is a family bond that helps make websites work and dynamic.

In this family of markup languages, (SGML) is the parent. SGML provides a approach to conclude markup languages and sets the customary for their . In other words, SGML states what some languages can or can't do, what contingency be included, such as tags, and the simple structure of the language. As a primogenitor passes on genetic traits to a child, SGML passes structure and format manners to markup languages.

(HTML) is a child, or application, of SGML. It is that customarily designs the page for an Internet browser. Using HTML, we can images, emanate page sections, settle fonts and approach the of the page. HTML is the markup denunciation that creates the form and coming of the . Additionally, regulating HTML, we can supplement other functions to a website around , such as . HTML is the accepted denunciation used for .

(XML) is a cousin to HTML and a nephew to SGML. Although XML is a markup denunciation and therefore partial of the family, it has opposite functions than HTML. XML is a subset of SGML, this give it rights that an application, such as HTML, buck not have. XML can conclude applications of the own. (RDF) is an focus of XML. HTML is singular to design and does not have subsets or applications. XML is a pared down, or light, chronicle of SGML, designed to work with singular . XML hereditary genetic traits from SGML, though is combined to make the possess family. Subsets of XML embody and .

Tagged as: HTML, Internet browser, Internet page, RDF, SGML, web document, web page design, website design, writer, XML


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