code: def load_table(self, table):
          
          region = table.database if table.database else self.default_region
          resource_name, collection_name = table.table.split('_', 1)
          # we use underscore "_" instead of dash "-" for region name but boto3 need dash
          boto_region_name = region.replace('_', '-')
          resource = self.boto3_session.resource(resource_name, region_name=boto_region_name)
          if not hasattr(resource, collection_name):
              raise QueryError(
                  'Unknown collection <{0}> of resource <{1}>'.format(collection_name, resource_name))
  
          self.attach_region(region)
          self.refresh_table(region, table.table, resource, getattr(resource, collection_name))
docs: Load resources as specified by given table into our db.