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.
1 Click the File tab. 2  Click Recent. 3  Click Recover Unsaved Documents if you are in Word 2010, Recover Unsaved Workbooks if you are in Excel 2010 or Recover Unsaved Presentations if you are in PowerPoint 2010.  Your saved drafts folder will open in a new window. Select the file and then click Open.