public function destroy()
    {
        // delete DB
        $sql = sprintf(
            'DROP TABLE `%s`;',
            $this->mysql->quote($this->section)
        );

        if (false === $this->mysql->exec($sql)) {

            $this->throwException(
                'Unable to delete the database: ',
                $this->mysql->errorInfo()
            );
        }

        $this->registry[$this->section] = array();
    }