# File lib/sdb/active_sdb.rb, line 692
      def delete_values(attrs)
        raise_on_id_absence
        attrs = uniq_values(attrs)
        attrs.delete('id')
        unless attrs.blank?
          connection.delete_attributes(domain, id, attrs)
          attrs.each { |attribute, values| @attributes[attribute] -= values }
        end
        attrs
      end