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Module I: Introduction to Web Technologies & Architectures

20252m

Which of the following is used to define the structure of an XML document?

(i) XSL
(ii) DTD
(iii) CSS
(iv) HTML

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Correct Answer: (ii) DTD

Explanation:

  • DTD (Document Type Definition) defines the legal structure, elements, attributes, and data types of an XML document.
  • It validates the syntax and layout of an XML document to ensure it conforms to the intended schema.
  • XSL (Extensible Stylesheet Language) is used for transforming and formatting XML documents.
  • CSS (Cascading Style Sheets) is used for presentation and styling.
  • HTML is a markup language for web page structure, not XML schema definition.

Example of DTD Declaration:

<!DOCTYPE note [
  <!ELEMENT note (to,from,heading,body)>
  <!ELEMENT to (#PCDATA)>
  <!ELEMENT from (#PCDATA)>
  <!ELEMENT heading (#PCDATA)>
  <!ELEMENT body (#PCDATA)>
]>

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