docs: def description(self):
          """Provides a 7-item tuple compatible with the Python PEP249 DB Spec."""
          return (
              self.name,
              self.type_code,
              None,  # TODO: display_length; should this be self.length?
              self.get_column_length(),  # 'internal_size'
              self.get_column_length(),  # 'precision'  # TODO: why!?!?
              self.scale,
              self.flags % 2 == 0)