目录背景：步骤1.备份数据库2.先将所需更改的数据库的路径先查询出来再进行关闭3.关闭该数据库4.再次查询发现已经是离线5.移动数据库文件（文件位置我移到D盘，根据个人情况。文件夹可以不需要建那么长）6.开启数据库
Assuming I create a method which is passed an object and that method would perform an action depending on the object passed. How should I identify the object?
加载中,请稍侯......