Final answer:
To model the relationship between orders and waiters in a UML2 class diagram, represent an Order class with a one-to-many association to a Waiter class, using an arrowed line and multiplicity indicators to show each order is associated with exactly one waiter and a waiter can handle multiple orders.
Step-by-step explanation:
To model the situation where an order is made with exactly one waiter and one waiter handles multiple orders using a UML2 class diagram, you begin by identifying the entities involved, which are Order and Waiter. The relationship between these entities is such that an Order is associated with one and only one Waiter, while a Waiter can be associated with multiple Orders. This is represented in UML with a one-to-many association.
In the UML class diagram, the Order class would have a single arrowed line pointing to the Waiter class indicating the direction of the association. To denote the multiplicity, the side of the Waiter class will have "1" indicating each order is handled by exactly one waiter, and the side of the Order will have "0..*" (meaning zero or more) to indicate a waiter can handle multiple orders.
Additionally, attributes and operations of each class can be added below the class name if necessary. For example, the Order class might have attributes such as orderID, orderDate, and totalPrice, while the Waiter class could include attributes such as waiterID and name.