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Which of the following is TRUE about foreign keys?

8. Which of the following is TRUE about foreign keys?

1. Tables that contain foreign keys contain columns that point to another table's primary key
2. Primary key of one table could be the foreign key for another table
3. Both A and B
4. None of the above

Answer: C) Both A and B

Explanation:

In case of foreign keys -

1. Tables that contain foreign keys contain columns that point to another table's primary key
2. Primary key of one table could be the foreign key for another table