text: # third party
  from sqlalchemy import Column
  from sqlalchemy import JSON
  from sqlalchemy import String
  
  # relative
  from . import Base
  
  
  class Dataset(Base):
      __tablename__ = "dataset"
  
      id = Column(String(256), primary_key=True)
      name = Column(String(256))
      manifest = Column(String(2048))
      description = Column(String(2048))
      tags = Column(JSON())
      str_metadata = Column(JSON())
      blob_metadata = Column(JSON())
  