You define the Order entity with properties like OrderId, CustomerId, and OrderDate. You also create a Value Object, Money, to represent the order total.
The Order entity has methods like CalculateTotal() and UpdateStatus(), which encapsulate business logic. The Money Value Object has methods like Add() and Subtract(). domain driven design eric evans ebook pdf 51
The OrderRepository encapsulates data access and provides a collection-like interface to the domain model. You use it to retrieve and update Orders. You define the Order entity with properties like