The domain

So I've set the environment. It's time to set the work model. Because I like monkeys and monkeys love bananas, I will start from the banana entity. Bananas are fruits and usually fruits stay in trees. So here's my model. Of course, I have to keep my data in a db, so all my entities must have Ids:

public enum FruitType {
    Banana,
    Mango,
    Orange
}

public class Fruit {
    public int Id { get; set; }

    public FruitType Type { get; set; }
 
    public int TreeId { get; set; }

    public Tree Tree { get; set; }
}

public class Tree {
    public int Id { get; set; }

    public IList<Fruit> Fruits { get; set; }
 
    public string Name { get; set; }
}

So this is my domain from now on. I have a simple enum and two entities in a one to many relationship. Simple enough!