Microsoft® SQL Server 2012 Unleashed

Reverting to a Database Snapshot for Recovery

If you have a database snapshot defined for a source database, you can use that snapshot to revert the source database to that snapshot’s point-in-time milestone. In other words, you consciously overlay a source database with the point-in-time representation of that database (which was generated when you created the snapshot). You must remember that you will lose all data changes that occurred from that point-in-time moment and the current state of the source database. However, this may be exactly what you intend.