Mac DB file corruption is a major issue that can affect the functioning of the Mac system. In Mac a database file is created for every files and folders stored in the Mac . It contains all the necessary details about the file size, type, date of creation and modification etc. If there is any Mac DB file corruption then the whole files system will collapse and the Mac will show various error while operating. It such type of cases you may have to rebuild the database and the problem is still not solved then you should format the hard drive. This will lead to severe data loss but it can be recovered instantly if you have made the back up of the important files earlier. You can also use the Time Machine back up after you fix Mac DB File Corruption. But if the back up is not working for you then Mac data recovery software can be used. It will scan the drive for any deleted data and then it will show you the preview of the files it found. It can recover every type of files which are lost in Mac DB File Corruption.