Case 12-1 Casey Is Using XML to Store Information About the Students

question 82

Multiple Choice

Case 12-1
Casey is using XML to store information about the students in the science classes that he teaches. He wants to design a DTD that he can use to validate the XML documents that he uses for this purpose, and he comes to you for help.

-After you teach Casey about declarations for elements with child elements, he constructs the element declaration <!ELEMENT class ((seminar | lesson | workshop) , time?) >.Given this declaration, which of the following is NOT a valid "class" element?

• A) <class><seminar>Beginner Drawing</seminar><time>Mon. 3-4</time></class>
• B) <class><lesson>One-on-One Painting</lesson><time>Tues. 11-noon</time></class>
• C) <class><seminar>Oil Painting</seminar><lesson>brushstrokes</lesson></class>
• D) <class><workshop>Working with Clay</workshop></class>

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Definitions:

Geometry

The branch of mathematics that deals with the properties and relationships of points, lines, surfaces, and solids.

Alkene

Organic compounds that differ from alkanes by having at least one double bond between carbon atoms, making them unsaturated.

Heat Of Hydrogenation

The heat of hydrogenation is the change in enthalpy that occurs when an unsaturated compound reacts with hydrogen to become saturated, used as a measure of the stability of the compound’s double bonds.

Alkene

A hydrocarbon compound characterized by the presence of at least one carbon-carbon double bond, playing a vital role in organic chemistry.