save model from another model

[VBKNIGHT]

how can i save my model to another same model ?

[HttpPost]
public ActionResult Create(Employee employee)
{
      if (ModelState.IsValid)
     {
            db.Employees.Add(employee);
            db.Employees_log.Add(employee); ===> error: "unable to update entityset because it has a definingquery and no insertfunction"
            db.SaveChanges();
     }
}

I basically wanted to save two models at the same time.