Draw an ERD containing the Customer, SalesPerson, and Order entities. For the Customer entity, add attributes of CustomerID $($primary key$),$ FirstName, LastName, and ContactNo. For the SalesPerson entity, add attributes of SalesPersonID $($primary key$),$ FirstName, LastName, and Location. For the Order entity, add the attributes of OrderNo $($primary key$),$ OrderDate, and TotalValue. A customer may place many orders, while an order is placed by exactly one customer. A sales person may process many orders, while an order may be processed by a sales person.