RE: access path

midrange-l-request@xxxxxxxxxxxx wrote:

>   2. Re: access path (Leif Svalgaard)
>
>From: Tom Liotta <qsrvbas@xxxxxxxxxxxx>
>> >   4. access path (Leif Svalgaard)
>> >Somebody enlighten me...
>> "...enlighten..."? Well, we'll see.
>>
>> >From the venerable _IBM System/38 Technical Developments_ chapter
>'System/38 data base concepts':
>
>> More detail is in the book, but none seems clear enough to help.
>>
>
>That is the point. An index (or an alternate index) is a simple, clear-cut
>concept. IBM made it mysterious by hidden it behind the label
>"access path". Well, thanks everybody for the clarification.

While it might be likely that IBM could say "An 'access path' is this object 
plus that object plus...", it might also be as difficult as deciding what a 
"program" is on the iSeries.

And I don't mean a *PGM object. E.g., can you write "programs" in REXX? Or what 
about binary executables under PASE? And when a user-written file system is 
implemented, where's the conceptual boundary between "program" and "file"?

Because there isn't an *ACCPTH object type for us, it just seems best to 
consider it a concept... or am I thinking of an "access plan"?

Never mind.

Tom Liotta

-- 
-- 
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788 x313
Fax    253-872-7904
http://www.powertechgroup.com


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