>>In a punch clock application, a given Day has two foreign keys into the Punches table: PunchId_In and PunchId_Out. How can you annotate this relationship so Entity Framework creates it as intended? Note: One or both of these foreign keys may be undefined (null).
>>
>>

>>public class Day
>>{
>>    public int DayID { get; set; }
>>    public int? PunchId_In { get; set; }
>>    public int? PunchId_Out { get; set; }
>>    public virtual Punch PunchIn { get; set; }
>>    public virtual Punch PunchOut { get; set; }
>>}
>>
>>public class Punch
>>{
>>    public int PunchId { get; set; }
>>    public DateTime PunchDT { get; set; }
>>}
>>

>
>Add the ForeignKey attribute on your Punch properties to point to the corresponding PunchId. See https://msdn.microsoft.com/en-us/data/jj591583.aspx#Relationships.

Thanks Rob