**6-1 A={L, M, N, O, P} B={P, Q, R, S, T} -A union B = {L, M, N, O, P, Q, R, S, T} -A union all B = {L, M, N, O, P, P, Q, R, S, T} -A intersect B = {P} -A except B = {L, M, N, O, Q, R, S, T}
**6-2
|mysql| mysql> SELECT fname, lname FROM individual -> UNION -> SELECT fname, lname FROM employee; ||<
**6-3
|mysql| mysql> SELECT fname, lname FROM individual -> UNION -> SELECT fname, lname FROM employee -> ORDER BY lname; ||<
