code: public boolean execInsertIgnoreDuplicate(D6Model[] modelObjects) {
      final D6Inex includeExcludeColumnNames = null;
      return execInsert(modelObjects, includeExcludeColumnNames, true);
    }
docs: Insert the specified model object into the DB ignoring duplicated entry
  
  @param modelObjects
  @return true:DB operation success false:failure