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 oneI have been asked this question in an online interview.My question comes from Entity-Relationship Diagrams topic in portion Database Systems Design and Implementation of Database Management

Consider a directed line(->) from the relationship set advisor to both

1.	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 oneI have been asked this question in an online interview.My question comes from Entity-Relationship Diagrams topic in portion Database Systems Design and Implementation of Database Management
Answer» Correct ANSWER is (b) One to one Easy explanation - This indicates that an instructor MAY ADVISE at most one student, and a student may have at most one ADVISOR.

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