MDF file is used as databases manage. The crucial data files such as tables, triggers, stored procedures, functions etc. are stored on MDF file of SQL Server. You have managed a lot of database on MDF file and NDF files of SQL Server, but corrupt them due to unexpected system shut down and many other reasons and show the error message like SQL error 5171. In this condition, many questions arises in your mind that how to fix SQL error 5171? And how can I repair SQL database? Don’t worry! SQL database recovery is one of the fantastic and powerful programs available in the data recovery market, which is easy to use and can aid you to fix SQL error 5171 and restore SQL database. Quick scan and advanced scan are main features of this application that helps in quick and deep recovery of corrupted MDF file without any data loss. Now, you can download this tool free of cost and repair corrupted SQL Server database. Demo version show only repaired database, but you cannot save it in .mdf format. If you want to export it then you have to buy this application at $129. Get more info: http://www.blog.sqlrecoverytool.com/fix-sql-error-5171.html