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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def exportdb():
    '''
    Return all the udev database

    CLI Example:

    .. code-block:: bash

        salt '*' udev.exportdb
    '''

    cmd = 'udevadm info --export-db'
    udev_result = __salt__['cmd.run_all'](cmd, output_loglevel='quiet')

    if udev_result['retcode']:
        raise CommandExecutionError(udev_result['stderr'])

    return _parse_udevadm_info(udev_result['stdout'])