code: def _init_jobs_table():
      
      _jobs_table = sqlalchemy.Table(
          'jobs', _METADATA,
          sqlalchemy.Column('job_id', sqlalchemy.UnicodeText, primary_key=True),
          sqlalchemy.Column('job_type', sqlalchemy.UnicodeText),
          sqlalchemy.Column('status', sqlalchemy.UnicodeText, index=True),
          sqlalchemy.Column('data', sqlalchemy.UnicodeText),
          sqlalchemy.Column('error', sqlalchemy.UnicodeText),
          sqlalchemy.Column('requested_timestamp', sqlalchemy.DateTime),
          sqlalchemy.Column('finished_timestamp', sqlalchemy.DateTime),
          sqlalchemy.Column('sent_data', sqlalchemy.UnicodeText),
          # Callback URL:
          sqlalchemy.Column('result_url', sqlalchemy.UnicodeText),
          # CKAN API key:
          sqlalchemy.Column('api_key', sqlalchemy.UnicodeText),
          # Key to administer job:
          sqlalchemy.Column('job_key', sqlalchemy.UnicodeText),
          )
      return _jobs_table
docs: Initialise the "jobs" table in the db.