Sunday, March 28, 2010

Add a foreign key

How would you add a foreign key constraint on the dept_no column in the EMP
table. Referring to the ID column in the DEPT table?

A. Use the ALTER TABLE command with the ADD clause in the DEPT table.
B. Use the ALTER TABLE command with the ADD clause on the EMP table.
C. Use the ALTER TABLE command with the MODIFY clause on the DEPT table.
D. Use the ALTER TABLE command with the MODIFY clause on the EMP table.
E. This task cannot be accomplished.

Answer:[B]
Highlight to find out the answer.

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