The testing team follows Software Testing Life Cycle (STLC) which is similar to the development cycle followed by the development team. There are following six phases in every Software development life cycle model: Requirement gathering and analysis. Design.
If you simply deleted an XLS file, DiskInternals Excel Recovery will look up the file system to find all XLS files that were deleted recently, and test each file for the possibility of successful recovery.
To reproduce: 1  Delete one column in a xls file with approximately 700,000 rows (again this is a large 300MB+ file), 2  Excel still displays the deleted column after deletion. 3  However, if you then save the file, close it, and then open the file back up again, you see that the deleted column is, in fact gone.