Performs some database math on the given field.  This will be database specific
        implementations and should return the resulting database operation.

        :param field: <str>
        :param op: <orb.Query.Math>
        :param target: <variant>
        :param context: <orb.Context> || None

        :return: <str>

def dbMath(self, typ, field, op, value):
        """
        Performs some database math on the given field.  This will be database specific
        implementations and should return the resulting database operation.

        :param field: <str>
        :param op: <orb.Query.Math>
        :param target: <variant>
        :param context: <orb.Context> || None

        :return: <str>
        """
        ops = orb.Query.Math(op)
        format = self.MathMap.get(typ, {}).get(ops) or self.MathMap.get('Default').get(ops) or '{field}'
        return format.format(field=field, value=value)