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Author Question: If STUDENT and COURSE participate in a relationship, this is an example of a(n): A) unary ... (Read 63 times)

s.tung

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on: Jul 7, 2018
If STUDENT and COURSE participate in a relationship, this is an example of a(n):
 
  A) unary relationship.
  B) coupled relationship.
  C) binary relationship.
  D) ternary relationship.
  E) extraordinary relationship.

Question 2

Having a level-1 diagram with no level-0 diagram is an example of a:
 
  A) violation of completeness.
  B) violation of consistency.
  C) balancing error.
  D) structuring violation.
  E) cohesion error.


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laurnthompson

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Reply #1 on: Jul 7, 2018
Answer to Question 1

C
Explanation: C) A binary relationship is the most common relationship in ERD.
CL

Answer to Question 2

B
Explanation: B) A level-0 diagram is necessary to establish the foundation for creating a level-2 diagram.
CL


s.tung

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Reply 2 on: Jul 7, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
Excellent

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