Draw an REA Diagram, complete cardinalities, for Joe's revenue cycle Joe's is a small ice cream shop located near the local university's baseball field. Joe's serves walk-in customers only. The shop carries 26 flavors of ice cream. Customers can buy cones, sundaes, or shakes. When a customer pays for an individual purchase, a sale transaction usually includes just one item. When a customer pays for a family or a group purchase, however, a single sale may include many different items. All sales must be paid for at the time the ice creams is served.