public static DataType getDataTypeByName(String dtName)
	{
		if(dtName == null) 
		{
			return null;
		} else if(dtName.equalsIgnoreCase("BOOLEAN_TRUE_WHEN_PRESENT")) {
			return DataType.BOOLEAN_TRUE_WHEN_PRESENT;
		} else if(dtName.equalsIgnoreCase("BOOLEAN") ||
				dtName.equalsIgnoreCase("BOOL"))
		{
			return DataType.BOOLEAN;
		} else if(dtName.equalsIgnoreCase("NUMBER"))
		{
			return DataType.NUMBER;
		} else if(dtName.equalsIgnoreCase("UNSIGNED"))
		{
			return DataType.UNSIGNED;
		}
		return null;
	}