Question

what is DTD define in Computer class 10
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Answer 1

A document type definition (DTD) is a set of markup declarations that define a document type for an SGML-family markup language (SGML, XML, HTML). ... It defines the document structure with a list of legal elements and attributes. A DTDcan be declared inline inside an XML document, or as an external reference.

Answer 2

DTD is document type definition. It defines the document structure with a list of legal elements and attributes. A DTD can be declared inline inside an XML document or as an external reference.
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