public void notifyObserversNow(){
  Log_OC.d(TAG,"notifyObserversNow");
  setChanged();
  notifyObservers();
}

public void notifyObserversNow ( ) { Log_OC . d ( TAG , "notifyObserversNow" ) ; setChanged ( ) ; notifyObservers ( ) ; }
should be called when some value of this db was changed . all observers are informed .
