Your database may get damaged due to several reasons. A backup will help you to restore the database lost in case of disasters and problems, like hardware failure, virus attack, or others. How To ...

How to Restore a SQL Database From a .MDF File. Computer database software such as Microsoft's SQL Server benefits all types of businesses, as it makes recordkeeping fast, flexible and secure.

I played with it a little bit and it didn't exhibit any weirdness for me.<BR><BR>As far as the existing test goes, I would assume that SQL detaches and deletes it when you have it set to overwrite ...