I do not have much of a experience in DB creation, backup/restoration. We have received some set of files from customer to work on his DB and one of the file is .DBK and it is of size 20GB.
So based on the size it appears to be the main database.
When i looked on the net it says .DBK file could be DBASE backup (which could not be our case) or SQL backup.
When I tried to do RESTORE FILELISTONLY with that file then I got the following error message:
The media family on device 'db_200804031804.DBK' is incorrectly formed. SQL Server cannot process this media family. Chances are file could be corrupt.
My questions are:
1. Could it be a valid SQL DB backup file??
2. And if yes then is there different way to restore such files?
Any help is greatly appriciated.