For any computing that is to be off-loaded from mainframe systems to workstations, applications should be readily portable to workstations without downloading data. You should be able to access and share data resident on z/OS systems by running applications on workstations.

Applications developed on workstations before they are ported to z/OS systems should also be able to access data on z/OS systems without downloading it to the workstations or to the LAN servers supporting the workstations.