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CENTRAL SCHOOL LIBRARY Observe the ER Diagram for the CENTRAL SCHOOL LIBRARY

Question 21

Multiple Choice

CENTRAL SCHOOL LIBRARY
Observe the ER diagram for the CENTRAL SCHOOL LIBRARY
CENTRAL SCHOOL LIBRARY Observe the ER diagram for the CENTRAL SCHOOL LIBRARY -How many optional columns will the relational schema mapped from the Central School Library ER diagram have? A) 0 B) 1 C) 2 D) 3
-How many optional columns will the relational schema mapped from the Central School Library ER diagram have?


A) 0
B) 1
C) 2
D) 3

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