+--------------------+  +-------------------------------+
| Purchased_Items    |  | Package_Deliveries            |
+--------------------+  +-------------------------------+
| Date       | Item  |  | Delivery_Company | Date       |
+------------+-------+  +------------------+------------+
| 2005/12/01 | Screw |  | FedEx            | 2005/12/01 |  
| 2005/12/01 | Screw |  | FedEx            | 2005/12/01 |
| 2005/12/01 | Screw |  | FedEx            | 2005/12/02 |
| 2005/12/02 | Screw |  +-------------------------------+
+--------------------+