Case-based Critical Thinking Questions
Case 2-2
Rosalind wants to add attribute declarations to her DTD, and she turns to you for information about the possible attribute types.
Rosalind wants to declare a "coursenum" attribute, the values of which will be unique within the document. Which attribute type should she use?

A. CDATA
B. UNIQUE
C. ID
D. IDREF


Answer: C

Computer Science & Information Technology

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