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Weaknesses of HTML and the Advantages of XML

Explore the limitations of HTML such as long page display, limited structuring options, and lack of hyperlink types. Discover how XML addresses these weaknesses by providing control over page layout, support for multiple hyperlink types, and the ability to deliver multiple types of information.

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Weaknesses of HTML and the Advantages of XML

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  1. XML Extensible Markup Language

  2. Weaknesses of HTML • Displaying very long pages • Only top-level structuring is <head> and <body> • No contextual headings • Can mistakenly use an <h3> instead of an <h2> XML

  3. Weaknesses of HTML • Control over page layout • Ad-hoc fixes • Tables with no borders • One-pixel images XML

  4. Weaknesses of HTML • Hyperlink types • Only a single type of hyperlink • Want multiple types • See also pages • Part of pages XML

  5. Weaknesses of HTML • Delivery of multiple types of information • Conversion to HTML loses inherent structure XML

  6. History • Until 1996, the SGML community hadn't taken an active interest in the web • Mid-1996 • 80 SGML experts joined with W3C to form an SGML working group • Wanted to develop a markup language with power and generality of SGML and easily implementable on the web XML

  7. History • Mid-1996 • This language had to • Support generalized markup on the web • Produce valid SGML-like documents • Provide hyperlinking capabilities compatible with the URL approach • Provide a generic, powerful style-sheet capability XML

  8. History • July 1997 • W3C XML Special Interest Group XML

  9. What It Is • Subset of SGML • Less complex • Easier to use • Can invent your own tagsets • Can make documents self-describing • Can validate your documents • Can break-up large documents into manageable chunks XML

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