> i was performing back up/restore with gbak as follows

> backup:-
> gbak -b -t -user "username" -pas "password" "source file" "destination file"

> restore:-
> gbak -rep -t -user "username" -pas "password" "source file" "destination file"

> during these two activities i terminated my application using ctrl+alt+del

> and i noticed that the data from all the tables got deleted.

> can anybody help me with this....

Backing up can not delete your data. So you probably "killed" the
restore. When you still have you backup file ("destination file" from
your backup) you can just start another restore and your database will
be back.

Regards

Stefan