Map the EER diagram below to a set of relations (i.e., relational schema). Underline the primary key attributes of each relation. Indicate referential integrity constraints using arrows. An arrow from an attribute A to an attribute B represents that A references B.

(Note: Do this question for all possible mapping options. Find all possible options to map the EER

diagram to a set of relations. Then show your mapping for each of options you found.)

lin eNumber ld date PurchaseOrder PurchaseOrder Has Orders iniks dateAcquired Movie movield length rating