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Chapter 26: Problem 6

What is the difference between XML schema and XML DTD?

Short Answer

Expert verified
The main differences between XML Schema and XML DTD are that Schema is XML-based and supports data types and namespaces, while DTD does not.

Step by step solution

01

Understand XML Schema

XML Schema defines the structure of an XML document. It describes the data elements in an XML document and what data can be stored in them. Some features of XML Schema include strong typing, support for namespaces, and the ability to specify new data types.
02

Understand XML DTD

XML DTD (Document Type Definition) is a set of markup declarations that define a document type for an SGML-based markup language, like XML. DTD defines the valid building blocks of an XML document. It can describe the document structure with a list of validated elements and attributes.
03

Compare XML Schema and XML DTD

While both XML schema and DTDs are used to describe the structure of an XML document, they differ in several ways. Schema is XML-based while DTD is not; Schema supports data types while DTD does not; Schema has support for namespaces while DTDs do not.

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