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  3. April 2003

Single level store & record blocking on update files (was RE: Whereis IBM?)

--- someone wrote:
> What OS/400 adds to that is the concept of single level store, in
> which the persistent store (hard disks) is basically considered one
> big swap file. Any address in any process can refer to any piece of
> memory anywhere within the (necessarily) large address space.

Sorry I'm late to this party, this may be a *little* OT, but it's been a 
niggler for me ever since
I abandoned the S/36 decades ago <g>.

Given the above statement that I believe was made by Hans (and how convenient 
that is, since this
relates to RPG programs!), I have never been able to understand why the AS/400 
does not allow
record blocking for update files like the S/36 did.  Since the AS/400 looks at 
the contents in
memory and on disk without regard to its actual location, why is this?

- Dan

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