These relationships derive from the business model and the selectiontree enforces them.
这些关系来自业务模型,并且由选择树实施它们。
2
Secondly, they produce the list which includes the files and directories will be backuped based on the selectiontree before copy and the present catalog tree of file system.
在数据实际备份前根据用户定义的备份资源树和文件系统当前目录树生成一个待备份的文件列表。
3
All these are tree models, except for the Navigation Selection model.