code: def _init_logs_table():
      
      _logs_table = sqlalchemy.Table(
          'logs', _METADATA,
          sqlalchemy.Column(
              'job_id', sqlalchemy.ForeignKey("jobs.job_id", ondelete="CASCADE"),
              nullable=False),
          sqlalchemy.Column('timestamp', sqlalchemy.DateTime),
          sqlalchemy.Column('message', sqlalchemy.UnicodeText),
          sqlalchemy.Column('level', sqlalchemy.UnicodeText),
          sqlalchemy.Column('module', sqlalchemy.UnicodeText),
          sqlalchemy.Column('funcName', sqlalchemy.UnicodeText),
          sqlalchemy.Column('lineno', sqlalchemy.Integer)
          )
      return _logs_table
docs: Initialise the "logs" table in the db.