When SQL Server database file has got corrupted due to several reasons such as virus infection SQL bugs, software & hardware malfunctions etc, then database of SQL Server MDF file can't be accessed by users. In this situation you can run DBCC CHECKDB command. If this command doesn't work properly then you can use external software such as SQL database file recovery software. Software allows users recover the SQL data files (MDF and NDF). It also recovers highly damaged MDF file too. This tool instantly & efficiently repairs SQL database file & perform MDF file recovery process without any trouble. It has a very user friendly graphical interface to ensure quick recovery of entire database of SQL Server MDF file & directly export in your SQL Server versions. Demo version is a one of the best feature of this tool which can help you to repair SQL database file & gives the preview of repaired database but you can't save it in .mdf format. For saving repaired database in .mdf format into SQL Server, you have to purchase full version of SQL database file recovery tool at $129.