Company database Tablename field1 | field2 |... one example row Offices office | city | region | mgr | target | sales | 22 | Denver | Western | 108 | 300000.00 | 186042.00 | Customers cust_num | company | cust_rep | credit_limit | 2111 | JCP Inc. | 103 | 50000.00 | Products mfr_id | product_id | description | price | qty_on_hand | REI | 2A45C | Ratchet Link | 79.00 | 210 | Employees empl_num | name | age | rep_office | title | hire_date | manager | quota| sales 105 | Bill Adams| 37 | 13 | Sales Rep | 1988-02-12 | 104 | 350000.00 | 367911.00 | Orders order_num | order_date | cust | rep | mfr | product | qty | amount | 112961 | 0000-00-00 | 2117 | 106 | REI | 2A44L | 7 | 31500.00 | What should the primary and foreign keys be? Draw a ERD diagram.