code: def delete(self, bucket=None, ignore=False):
          
  
          # Make lists
          buckets = bucket
          if isinstance(bucket, six.string_types):
              buckets = [bucket]
          elif bucket is None:
              buckets = reversed(self.buckets)
  
          # Iterate
          tables = []
          for bucket in buckets:
  
              # Check existent
              if bucket not in self.buckets:
                  if not ignore:
                      message = 'Bucket "%s" doesn\'t exist.' % bucket
                      raise tableschema.exceptions.StorageError(message)
                  return
  
              # Remove from buckets
              if bucket in self.__descriptors:
                  del self.__descriptors[bucket]
  
              # Add table to tables
              table = self.__get_table(bucket)
              tables.append(table)
  
          # Drop tables, update metadata
          self.__metadata.drop_all(tables=tables)
          self.__metadata.clear()
          self.__reflect()
docs: https://github.com/frictionlessdata/tableschema-sql-py#storage