Backup2 Object
后续版本的 Microsoft SQL Server 将删除该功能。请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。
The Backup2 object defines a Microsoft SQL Server database or log backup operation and extends the functionality of the Backup object.
注释
The Backup2 object extends the functionality of the Backup object for use with features that were introduced in SQL Server 2000. It also inherits the properties and methods of the Backup object. With the Backup2 object, you can:
- Retrieve or specify a backup or media set password from SQL Server 2000 and later.
The properties of the Backup2 object may not be compatible with instances of SQL Server version 7.0 or earlier. For information about using the Backup2 object in an application that also runs with an instance of SQL Server 7.0, refer to the Remarks section for specific properties. For more information, see Programming Extended SQL-DMO Objects.