If your database (mdf) get corrupt then you can recover it by updated backup..This is the best way to get back all your precious data. The another way to recover corrupt mdf files is use of good sql database recovery software. I will suggest you to try Stellar Phoenix SQL Database Recovery because I have already use this software & recover my database in 3 easy steps. First check its demo version from the site: http://www.stellarsqldatabaserecovery.com/[/url]

If you find it useful then you can also purchase it.