RE: CHAIN versus SETLL

[PaulMmn <PaulMmn@xxxxxxxxxxxxx>]

At 01:14 PM 5/20/97 -0500, Bob Cozzi wrote (in part):
>
>...CHAIN is a direct-to-the-record process, whereas SETLL does 
>(metaphorically speaking) a CHAIN with no lock, followed by a READP.  This 
>allows the next READ to access the next record in the file. (It doesn't 
>actually do a READP, folks, so don't write letters <g>).


The way I've always envisioned the SETLL and SETGT is that they are working
'in the cracks;' the 'dividing lines' between records  (actually, IBM refers
to it as 'positioning the cursor' of the file...).   

CHAIN, on the other hand, does the SETLL then a READEqual key...

You just have to think backwards and inside out to get inside my head.  (:

--Paul E Musselman
PaulMmn@ix.netcom.com

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