code: def record_to_objects(self):
          
          from ambry.orm import SourceTable
  
          bsfile = self.record
  
          failures = set()
  
          # Clear out all of the columns from existing tables. We don't clear out the
          # tables, since they may be referenced by sources
  
          for row in bsfile.dict_row_reader:
              st = self._dataset.source_table(row['table'])
  
              if st:
                  st.columns[:] = []
  
          self._dataset.commit()
  
          for row in bsfile.dict_row_reader:
              st = self._dataset.source_table(row['table'])
  
              if not st:
                  st = self._dataset.new_source_table(row['table'])
                  # table_number += 1
  
              if 'datatype' not in row:
                  row['datatype'] = 'unknown'
  
              del row['table']
  
              st.add_column(**row)  # Create or update
  
          if failures:
              raise ConfigurationError('Failed to load source schema, missing sources: {} '.format(failures))
  
          self._dataset.commit()
docs: Write from the stored file data to the source records