In the section relation which of the following is used as a foreign key ?
A. Course_id
B. Course_id,sec_id
C. Room_number
D. Course_id,sec_id,room_number
Answer:A
In the section relation which of the following is used as a foreign key ?
A. Course_id B. Course_id,sec_id C. Room_number D. Course_id,sec_id,room_number
Explanation:Course_id is the only field which is present in the course relation.