// Code Sample Code first 1 : 1 relationship public class User { public int Id { get; set; } public string UserName { get; set; } public DateTime CreatedOnUtc { get; set; } public virtual UserProfile UserProfile { get; set; } } public class UserProfile { public int Id { get; set; } public int UserId { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public v..