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Question

Consider a database name “Internship” whose attributes are intern_id (primary key), subject.

Intern_id = {1, 2, 3, 4, 5, 6}
Subject = {sql, oop, sql, oop, c, c++}

If these are one to one relation then what will be the output of the following MySQL statement?
SELECT intern_id
FROM Internship
WHERE subject IN (c, c++, oop);

a.

{5, 6}

b.

{1, 2, 3}

c.

{3, 4}

d.

{2, 4, 5, 6}

Answer: (d).{2, 4, 5, 6}

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Q. Consider a database name “Internship” whose attributes are intern_id (primary key), subject. Intern_id = {1, 2, 3, 4, 5, 6} Subject = {sql, oop, sql, oop, c, c++} If these...

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