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Module I — Introduction to Web Technologies and Architectures

20242m

What does DTD stand for in XML? (i) Document Type Declaration (ii) Data Type Declaration (iii) Document Template Descriptor (iv) Direct Type Definition

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Answer: (i) Document Type Declaration (as listed in the options).

DTD is a set of rules that defines the structure and legal elements/attributes of an XML document, so a parser can validate it. Its formal expansion is Document Type Definition, and among the given options (i) is the closest match. It is referenced in an XML file with <!DOCTYPE ...>.

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