ITPEC FE Morning October 2021 Question 10

Which of the following is an appropriate description of XML?

a)An exclusive editor is required to produce XML documents.b)It is an integration of the logical structure and document style.c)It is based on HTML and offers more extended functions.d)The attributes and logical structure of a document can be defined with user-defined tags.

Explanation

User-defined tags describe a document's structure and attributes — XML is a meta-language: you invent the element and attribute names that fit your data.

XML (Extensible Markup Language) is a W3C standard derived from SGML. Tags such as <order> or <price currency="USD"> are chosen by the user, optionally constrained by a DTD or XML Schema, so the markup carries the logical structure and attributes of the data rather than its appearance.

Answer (d)

Why not others:

•(a) — an XML document is plain text; any text editor can create it
•(b) — XML keeps structure apart from presentation; the look is supplied separately by a style sheet such as CSS or XSL
•(c) — XML is not built on HTML; both come from SGML, and XML is a simplified subset of it. HTML has a fixed tag set, XML an open one

Key rule: HTML describes how content is presented with a fixed set of tags; XML describes what the data is with tags you define.

Algorithm and Programming · AI-written, may contain errors

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