'Retrieve the metadata of current data file.
.. note:: This is a `classmethod`.
:return: Metadata of current data file. The metadata here is a
dictionary while the `Keys` are made of `Section Name` and
`Values` are made of `Information` defined in the hosts data file.
:rtype: dict'

@classmethod
def get_info(cls):

    cls._cur.execute('SELECT    sect,    info    FROM    info;')
    info = dict(cls._cur.fetchall())
    return info
