No security to control access, separate programs have to be written. Extensive built in security to control access. Has no ability to fix decimal data errors. Decimal data errors may be fixed individually or in-mass. Can only view fields in character mode.
Separate commands have to be used to display or update or delete.
Modes can be changed on the fly. Can only access one file at a time. Each permanent DFU you create, uses additional disk space. Has no access to RRN when accessing a logical file. RRN is displayed on each record.