Case 1-1 Ryan Is New to the Use of XML

question 20

Multiple Choice

Case 1-1 Ryan is new to the use of XML, so he has a lot of basic questions about the fundamentals, including some philosophical questions about the language.
-Ryan asks how the rules for a given XML vocabulary are specified, and you explain that it is done using either a document type definition (DTD) or schema. Which of the following is NOT a true statement about DTDs and schemas?

• A) Both DTDs and schemas contain rules for how data in a document vocabulary should be structured.
• B) A DTD defines the structure of the data and, very broadly, the types of data allowable.
• C) A schema more precisely defines the structure of the data and specific data restrictions.
• D) DTDs and schemas are required, but they are seldom helpful in ensuring that your XML documents follow a specific vocabulary.

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Definitions:

Trichromatic Theory

A theory explaining color vision based on the presence of three types of color receptors in the eye, each sensitive to red, green, or blue.

Color Afterimages

Visual illusions where an image continues to appear in one's vision after exposure to the original image has ceased, typically in complementary colors.

Hammer

A tool typically used to drive nails into, or pull them from, some other object, usually consisting of a handle and a heavy head used to deliver an impact.

Bones

The rigid organs that form part of the endoskeleton of vertebrates, providing support, protection, and aiding in movement by forming levers for muscles to act upon.