Draw an ER diagram for each of the following situations. 4. Each employee in a company must take at least one training course. An employee could take many training courses. A training course may be taken by many employees or may not be taken by any employee. 5. You are asked to create a database to store customer and order information. The customer information to be captured includes the customer ID, customer name, account balance, and credit limit. The order information to be captured includes order ID, order date, and total amount. Each customer may place many orders or may not place any order, but each order will be placed by exactly one customer