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In the section relation which of the following is used as a foreign key?

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in Database Management by (119k points)
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

The question was posed to me during an online interview.

My query is from Querying database part-1 DDL topic in chapter Database Systems Design and Implementation of Database Management

1 Answer

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Best answer
Right choice is (a) Course_id

Easiest explanation - Course_id is the only field which is present in the course relation.

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