Author Question: If STUDENT and COURSE participate in a relationship, this is an example of a(n): A) unary ... (Read 61 times)

s.tung · **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.

laurnthompson · **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