From ibm themselves in their technology terms site
file A collection of related data that is stored and retrieved by an assigned name. A sequence of records. If the file is located in internal storage, it is an internal file; if it is on an input/output device, it is an external file. Scott ford www.identityforge.com from my IPAD > On Dec 18, 2014, at 10:00 PM, Tony Harminc <[email protected]> wrote: > > On 18 December 2014 at 19:56, Paul Gilmartin > <[email protected]> wrote: > >> I take as the authority: > >> http://www-01.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.idad400/dsam.htm%23dsam?lang=en > z/OS DFSMS Using Data Sets > SC23-6855-00 >> http://www-01.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.idad400/dsam.htm%23dsam?lang=en > >> You can store all types of data sets on DASD but only sequential data sets >> on magnetic tape. Mountable tape volumes can reside in an automated tape >> library. For information about magnetic tape volumes, see z/OS DFSMS Using >> Magnetic Tapesz/OS DFSMS Using Magnetic Tapes. You can also direct a >> sequential data set to or from spool, a UNIX file, a TSO/E terminal, a >> unit record device, virtual I/O (VIO), or a dummy data set. >> >> OK. So what might a "File Object" be mapped to that isn't subsumed by that >> description. OK; I guess a socket. > > PL/I supported QTAM and later TCAM message queues as what a C or Java > person might call "first class objects". Looked at another way, such a > teleprocessing (sounds quaint now, doesn't it) file is a part of the > PL/I language, but is not mapped to any sort of dataset or even DD > statement. It is a TRANSIENT (as opposed to SEQUENTIAL or DIRECT) PL/I > file. > > I imagine this support disappeared along with QTAM and TCAM. > >> But on occasion, I've cited it to IBM >> support when they say, "WAD; we don't support that; as the Manual says it >> must be a data set." Invariably, they Humpty-Dumpty me, and I lose. > > Your case would be better supported if they had said " You can store > all types of files on DASD but only sequential files on magnetic > tape." That would closely match what you might find in the PL/I > manuals. But then that wouldn't be what a "Using Datasets" book would > say, would it... > > Tony H. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
