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Question

Which of the following relation updates all instructors with salary over $100,000 receive a 3 percent raise, whereas all others receive a 5 percent raise.

a.

UPDATE instructor
SET salary = salary * 1.03
WHERE salary > 100000;
UPDATE instructor
SET salary = salary * 1.05
WHERE salary <= 100000;

b.

UPDATE instructor
SET salary = salary * 1.05
WHERE salary < (SELECT avg (salary)
FROM instructor);

c.

UPDATE instructor
SET salary = CASE
WHEN salary <= 100000 THEN salary * 1.05
ELSE salary * 1.03
END

d.

Both a and c

Answer: (d).Both a and c

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Q. Which of the following relation updates all instructors with salary over $100,000 receive a 3 percent raise, whereas all others receive a 5 percent raise.

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