public static void insert(String title) throws ESellException
	{
		makeConnection();
    	PreparedStatement preparedStatement = null;
    	
        if(conn != null)
        {
            try {
            	//Statement vorbereiten
                String sql = "INSERT INTO categories(`title`) VALUES(?)";
                preparedStatement = conn.prepareStatement(sql);
                preparedStatement.setString(1, title);
                
                //Statement absetzen
                preparedStatement.execute();

            } catch (SQLException e) {
            	// ToDo
                e.printStackTrace();
                throw new ESellException(ESellException.ErrorCode.INSERT_ERR);
            }
        }
        else
        	throw new ESellException(ESellException.ErrorCode.DB_ERR);
	}