1:关于判断文件的权限,在IO里面提供了方法
2:利用数据库的作业。来实现,
数据库差异备份:
BACKUP DATABASE [Popeye] TO DISK = 'E:\DataBackUp\Popeye\backupPart.bak' WITH INIT , DIFFERENTIAL, NAME = N'Popeye差 备'
数据库全备:
BACKUP DATABASE [Popeye] TO DISK = 'E:\DataBackUp\Popeye\backup.bak' WITH INIT, NAME = N'Popeye 全备'