Then, a different opinion about whether top-down is naturally better than bottom-up and whether EDB relations in a logic database should be acyclic is put forward to discuss with the authors of [1].

• 然后；就自顶向下方式的性能是否一定优于自底向上方式；以及理想的逻辑数据库事物间联系的状态是否应当没有回路问题提出不同的看法；与文[1]的作者商榷.