code: def entity_name(self):
      raise NotImplementedError
  
file_path: lore/lore/features/db.py
imports: from abc import ABCMeta
  from datetime import datetime
  import lore.io
  from lore.features.base import BaseFeatureExporter, BaseFeatureImporter
  import lore.metadata
  from lore.metadata import FeatureMetaData
  from sqlalchemy.orm import sessionmaker, scoped_session
  import pandas
  from lore.util import convert_df_columns_to_json
  import json
label_desc: Use image node_id 1 for calling the DBFeatureExporter obj's underlying member method code with example usage: obj.entity_name() without return types