Write the relational algebra formula to apply a UNION relational operator to the tables shown in Figure Q$3\mathrm{.}13.$

$14.$

Create the table that results from applying a UNION relational operator to the tables shown in Figure Q$3\mathrm{.}13.$

$15.$

Write the relational algebra formula to apply an INTERSECT relational operator to the tables shown in Figure Q$3\mathrm{.}13.$

$16.$

Create the table that results from applying an INTERSECT relational operator to the tables shown in Figure Q$3\mathrm{.}13.$

$17.$

Using the tables in Figure Q$3\mathrm{.}13,$ create the table that results from MACHINE DIFFERENCE BOOTH.