"Deleted data can be retrieved using a data recovery program, although it can be difficult to retrieve lost data at times, such as when data has been corrupted."
You can't. Once they have been deleted from the site, they are gone and cannot be retrieved.
Data recovery software does exactly that. It finds items that have been deleted off of a computer. You can purchase the software or go to a trained expert to help you do this.
Data file recovery retrieves deleted files by scanning the hard drive. When a file is deleted, its data is still capable of being recovered as long as the space it was in on the hard drive has not been rewritten.
How is data retrieved from the technology
Deleted files can be retrieved using data recovery software until they are overwritten, To ensure that they are permanently destroyed, you may full-format your disk or use a file shredding utility. Both will overwrite them with zeros or some "garbage" data.
Your Sim card doesn't immediately erase a file once you delete it. Instead it just frees up the space that was occupied by that file (massage) and lists its space as available re-usable space. However until that space is overwritten by new data, in your case new messages, phone numbers etc., your old deleted file is still there and can be recovered.
IF you meant 'retrieve deleted data' - there is software available that will recover deleted files - but only if the computer hasn't been used since the time of the deletion !
creating a new volume and recovering the files from a backup source
rollback command can retrieve deleted data from a table, provided commit has not been performed after deleting the data. both rollback and commit are transaction control statements.
The data will be lost for ever unless they have been saved somewhere else.
The FROM clause names the table that contains the data to be retrieved in a SELECT statement.
Your online multiplayer data CAN'T be deleted; Only your Campaign data can be deleted.