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XML Simplified

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Module 1<br />

Introduction to <strong>XML</strong><br />

Figure 1.1 depicts the evolution of markup languages.<br />

Concepts<br />

Figure 1.1: Evolution of Markup Languages<br />

The features and drawbacks of earlier markup languages are:<br />

‣ ¾ Features<br />

1. GML describes the document in terms of its format, structure, and other properties.<br />

2. SGML ensures that the system can represent the data in its own way.<br />

3. HTML used ASCII text, which allows the user to use any text editor.<br />

‣ ¾ Drawbacks<br />

1. GML and SGML were not suited for data interchange over the Web.<br />

2. HTML possesses instructions on how to display the content rather than the content they<br />

encompass.<br />

<strong>XML</strong> <strong>Simplified</strong><br />

Version 1.0 © Aptech Limited

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