Why notmapped is not working as is should

I have these tables represent on the following pieces of code;

[StringLength(30)]
public string Email { get; set; }

[NotMapped] // is not doing anything on the table neither razor views.
[Compare("Email", ErrorMessage ="Los emails no coinciden")]
public string ConfirmarEmail { get; set; } 

It's supposed to create a razor view but not a table, it's supposed to do the previous statement but for some reasons it does not create the razor view, besides when I create it on the view "Compare" is not working either.

Do you guys have any answer to this concern?