def dbclass(self, value):
        """Set the connection's dbclass property.

        Args:
            value:  New dbclass value. String.

        Returns:
            Nothing.
        """

        if not is_valid_dbclass(value):
            raise AttributeError("'{}' is not a valid database type".format(value))

        self._class = value
        self._connectionXML.set('class', value)