考虑到软件的范围不大，所以故障处理一般由操作系统完成，系统只要保持与操作系统的接求，程序可以有独立于操作系统之外的数据备份功能与过程，以及系统崩溃后的数据恢复功能，这点在数据库软件中已经达到了，只要稍微在其上再增加用户所需要的附加功能即可。-consider the scope of software to do so by the failure to deal with the general operating system completed maintain the system as long as the operating system and then requested that the procedure can be independent of the operating system is beyond the functions and data backup process, and the collapse of the system and data recovery functions, which in database software has been achieved. As long as a slight on them to increase user needs the additional functionality can be.