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Question

Which of the following deletes all tuples in the instructor relation for those instructors associated with a department located in the Watson building which is in department relation.

a.

DELETE FROM instructor
WHERE dept_name IN 'Watson';

b.

DELETE FROM department
WHERE building='Watson';

c.

DELETE FROM instructor
WHERE dept_name IN (SELECT dept name
FROM department
WHERE building = ’Watson’);

d.

None of the mentioned

Posted under DBMS

Answer: (c).DELETE FROM instructor
WHERE dept_name IN (SELECT dept name
FROM department
WHERE building = ’Watson’);

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Q. Which of the following deletes all tuples in the instructor relation for those instructors associated with a department located in the Watson building which is in department...

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