public JsonResult UpdateData(DataMartModel model)
 {
     try
     {
         model.UpdateDatabase();
         return Json(new
         {
             Success = true
         });
     }
     catch (Exception)
     {
         return Json(new
         {
             Success = false
         });
     }
 }
 public JsonResult GetTransactions(DataMartModel model)
 {
     return Json(model.GetTransactions(), JsonRequestBehavior.AllowGet);
 }
 public JsonResult GetRatings(DataMartModel model)
 {
     return Json(model.GetRatings(), JsonRequestBehavior.AllowGet);
 }