This week's book giveaways are in the Cloud and AI/ML forums. We're giving away four copies each of Cloud Native Patterns and Natural Language Processing and have the authors on-line! See this thread and this one for details.
Given that there is unidirectional oneToMany relationship between a Customer and Order, you want to model
it as a Map in Customer as following:
Order has a property named paymentType of enum PaymentType, with values such as CREDITCARD, DEBITCARD....
You want the paymentType field of Order entity to be the key of the map and the Order entity to be the value. The
primary key of Order is orderId, which is an integer.
Which of the following options correctly specify this relationship?
private Map<PaymentType, Order> orders;