Q. In the section relation which of the following is used as a foreign key? (Solved)
1. course_id
2. course_id,sec_id
3. room_number
4. course_id,sec_id,room_number
- a. course_id
1. course_id
2. course_id,sec_id
3. room_number
4. course_id,sec_id,room_number