public static boolean ToggleQuizQuestionLink(int QuizId, int QuestionId, boolean Link)
    {
        String statement;
        if (Link)
        {
            statement = String.format("Insert into quizquestion values (%d, %d)", QuizId, QuestionId);
        }
        else
        {
            statement = String.format("Delete from quizquestion where questionid = %d and quizid = %d", QuestionId, QuizId);
        }
        return runStatement(statement);           
    }