如何用批处理一次备份多个数据库

SQL Server 2005 Books Online 
BACKUP (Transact-SQL) 
http://msdn2.microsoft.com/en-us/library/ms186865.aspx

A. Backing up a complete database

The following example backs up the AdventureWorks database to a disk file.

BACKUP DATABASE AdventureWorks
TO DISK = 'Z:\SQLServerBackups\AdvWorksData.bak'
WITH FORMAT;
GO

简单一点在.sql文件中放置多个BACKUP SQL, 就可以完成执行一个步骤就可以生成多个数据库备份