Case-based Critical Thinking QuestionsCase 13-2Judy has begun to apply the basic information that you have given her about schemas, and she would now like your help in mastering the details of how schemas work. Judy would like to indicate that the substitution attribute mentioned in the previous problem is a required attribute. Which of the following attribute definitions shows how to accomplish this?
A.
B.
C.
D.
Answer: A
Computer Science & Information Technology
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Computer Science & Information Technology