The entity class TransactionItem is called a union t A transaction item must be a member of exactt Note that A Rental entity gets its key from the videoed of its related Videotape entity, and a Sale entity gets its key from the itemld of its related InventoryItem entity the entities in the category do not all have the same key attributes. transid CustomerTransaction Has totalsal specialization Bale InventoryItem Videotape price temt Category superclass deal d EER diagram for customer rentals and sales 2.On page 3.4, translation the EER diagram into a relational model. (15 pts)