model.getTable(0).getColumn(1).setRequired(true);
    public void testMakeAutoIncrement()    {        final String modelXml =             "<?xml version='1.0' encoding='ISO-8859-1'?>\n"+            "<database name='roundtriptest'>\n"+            "  <table name='roundtrip'>\n"+            "    <column name='pk' type='INTEGER' primaryKey='true' required='true'/>\n"+            "    <column name='avalue' type='INTEGER'/>\n"+            "  </table>\n"+            "</database>";        Database model = createDatabase(modelXml);        insertRow("roundtrip", new Object[] { new Integer(1), new Integer(2) });    	model.getTable(0).getColumn(1).setAutoIncrement(true);    	alterDatabase(model);        Database modelFromDb = readModelFromDatabase("roundtriptest");        assertEquals(getAdjustedModel(),        		     modelFromDb);        List beans = getRows("roundtrip");        assertEquals(new Integer(2), beans.get(0), "avalue");    }