void query_three(Connection conn)
	{
		try
		{
			PreparedStatement ps = conn.prepareStatement(
				"create view Q6c as " +
				"SELECT Q6a.tutorialRef " +
				"FROM Q6a, Q6b " +
				"WHERE Q6a.tutorialRef = Q6b.tutorialRef " +
	            "AND Q6b.PM_BOOKED > Q6a.AM_BOOKED"
			);

			ps.executeQuery();


		ps.close();

		} catch (Exception e) {
			e.printStackTrace();

		}
	}