Transform data with external programs
You can use external programs as filter plug-ins to transform data to a different format before a backup and transform it back after the restore.
To compress or transform data, use the BACKUP_FILTER and RESTORE_FILTER configuration parameters to call external programs.
Tip: If you compress row data before backing it up, compressing
the backup image with an external utility might not result in a smaller
backup image.
The filter can be owned by anyone, but cannot have write access to non-privileged users. Permission on the filters is the same as that of permission on any other executable file that is called by the HCL OneDB™ server or HCL OneDB utilities.