This paper summerizes the practical experiences of the mistake frap in multi-user foxbase+ data bank system,and provides a set of procedure which solves file visiting conflict and guards the messages of mistaking spots in the system.

• 本文总结了多用户Foxbase＋数据系统中错误陷井的使用经验，给出了一组在多用户数据库系统中解决文件访问冲突及保护系统现场信息的例程