[T-SQL] What to do , if mdf file get corrupted

Today one of my old friend asked help that he has got mdf file corrupted so what should he do.

So normally there are different excersies which one can do if he knows about the structure of sql server but i am suggesting two tool which you can download and get the task done.:

http://www.mdfrepair.com/
http://www.nucleustechnologies.com/sql-recovery.html

Download it and there are simple steps what you can do to get your db repaired.