Consider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates _________ cardinality
A. One to many
B. One to one
C. Many to many
D. Many to one
Answer:A
Consider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates _________ cardinality
A. One to many B. One to one C. Many to many D. Many to one
Explanation:This indicates that an instructor may advise at most one student, and a student may have at most one advisor.