Drop the ItemIndex3 index from the Item table. Assume the Item table has been created, but there are no integrity constraints. Create the necessary integrity constraint to ensure that the only...

Drop the ItemIndex3 index from the Item table.

Assume the Item table has been created, but there are no integrity constraints. Create the necessary integrity

constraint to ensure that the only allowable values for the Category field are PZL, GME, and TOY. Ensure that

the ItemNum field is the primary key and that the ItemNum field in the OrderLine table is a foreign key that must

match the primary key of the Item table.