Use the model constructs $($e$.$g$.,$ the

material on the E$-$R model and the enhanced E$-$R model$)$ Balanced Unicycle sells unicycles online. Attributes of Unicycle include

ProductID, ProductName, Style, Weight, and Price. Attributes of Customer

include CustomerID, CustomerName, and CustomerAddress $($composed of Street,

City, State, and ZipCode$).$ Customers place orders with Balanced Unicycle.

Attributes of order are OrderID and OrderDate. All customers have placed at

least one order and customers may place many orders over time. Each order is

placed by a single Customer. Orders can include one or more type of unicycle

$($identified by ProductID$).$ A type of unicycle $($identified by ProductID$)$ can be

included in one or more order. Balanced Unicycle keeps track of the quantity of

each type of unicycle that is included in an order.