//Fleetdata Entity
    public class Fleetdata : EntityObject
    {
      public string Ad_Ma { get; set; }
      public string Id_Ma { get; set; }
      public string CustomerNr { get; set; }
      public string First_Delivery { get; set; }
      public bool Want_Key { get; set; }
      public bool Rb_Change { get; set; }
      public bool Pallet_Delivery { get; set; }
      public string Name { get; set; }
      public string Company_Name { get; set; }
      public string Street_HouseNr { get; set; }
   public string Postalcode_Place { get; set; }
   public string Phone { get; set; }
   public string Mobilephone { get; set; }
   public string Fax { get; set; }
   public string Email { get; set; }
   public string Important_Infos { get; set; }
   public bool Delivery_After { get; set; }
   public string Delivery_Point { get; set; }
   public string Delivery_Time_Window { get; set; }
   public List<FleetdataRestday> Rest_Days { get; set; } = new
   List<FleetdataRestday>();
   public List<FleetdataDeliveryday> Deliverydays { get; set; } = new
   List<FleetdataDeliveryday>();
}



//Delivery_Day Entity
public class Delivery_Day : EntityObject
{
    public string Weekday { get; set; }
    public List<FleetdataDeliveryday> Fleetdatas { get; set; } = new
    List<FleetdataDeliveryday>();
}




//Associative table
public class FleetdataDeliveryday
{
    public int FleetdataId { get; set; }
    public int DeliveryDayId { get; set; }
    public Fleetdata Fleetdata { get; set; }
    public Delivery_Day Delivery_Day { get; set; }
}

//My GetAll Method
public List<Fleetdata> GetAll()
{
   return _dbContext.Fleetdatas
   .Include(x => x.Rest_Days)
   .Include(x => x.Rest_Days.Select(r => r.Rest_Day))
   .Include(y => y.Deliverydays)
   .Include(y => y.Deliverydays.Select(d => d.Delivery_Day))
   .ToList();
}