Now that we know how to define simple domain classes using the Code First approach, and we can use the DbContext
class to perform the database operations using the domain classes, let's see how we can implement database multiplicity relationships using these domain classes. We will see how to implement the following types of relationships, using Entity Framework Code First:
One-to-many relationship
One-to-one relationship
Many-to-many relationship
We will also take a look at the various ways in which these relationships can be implemented, such as using Entity Framework conventions, data annotations, and fluent API for these configurations.