In <3877421865811083.wa.paulgboulderaim....@listserv.ua.edu>, on
07/07/2013
at 12:21 PM, Paul Gilmartin <paulgboul...@aim.com> said:
>I wonder how HLASM does it.
Presumably uses PBAMP rather than QSAM.
>Particularly needed for nested COPY statements.
I suspect that it reads the entire member before processing it.
>IBM provides a transformation rather than a mapping.
Same thing.
>These describe the Access Method interface, but say nothing about
>the data format, which I believe is a trade secret.
You don't need to know the internal data structure for normal access.
AFAIK that remains true even if you're using FAM.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Atid/2 <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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