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  2. RPG400-L
  3. October 2005

Re: Multiformat Logical File

Satheesh -
Suppose that you have a Sales order detail file that has currently active sales order information, and a history file with the same record layout containing archived sales order information.
You can build a keyed multiformat logical over the two files to use in an RPG program, and by using SETLL and READ or READE on the FILE name, not the record format name(s), you can process the current and historical information through the use of the logical file.
This is functionally equivalent to performing a UNION of the two files to get information via SQL.
Another use for multiformat logicals is with traditional AS/400 - iSeries EDI packages.
Depending on the complexity of the EDI document, you will have a Header file and one or more Detail files that are used to construct the data that drives the EDI translator. You will typically tie all of these files together with a multiformat logical file and use the logical file in the EDI translation process. 

Regards,
Steve Landess
Austin, Texas
(512) 423-0935
----- Original Message ----- From: "Satheeshkumar_selvaraj" <Satheeshkumar_selvaraj@xxxxxxxxxx> 
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Tuesday, October 11, 2005 12:21 PM
Subject: Multiformat Logical File


Hello All,



Can any one please tell me what is the use of Multiformat Logical Files.

Under which situations it is used?



-Satheesh



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