RE: Difference bet. Primary and Full procedural file.

A Primary file uses the RPG cycle to read the file, which means that you
don't read each record, the program itself does.

FMYFILE  UP  E       DISK
C         MOVE     '0'  MYFILED
C         UPDATE   MYFILER

Is a complete program (with spacing all thrown off).

Using the file as a Full Procedural, you would do SETLL and READs to do the
same thing in a do loop.

The cycle is very elegant, actually, but does not jive with the rest of
programming languages, C, Basic, Pascal, etc... so it's considered something
like the GOTO statement, to be avoided like the plague.

If you need to maintain RPGII or RPGIII upgraded from II you will need to
learn the cycle and level breaks.  New could is usually coded using Full
Procedural files, the main reason being people just coming into the AS/400
world don't know the cycle from a hole in the wall.

Anyone who has been coding in RPG for any length of time, however, will know
the cycle and be able to maintain code.  But as the RPG Programmers get
younger, the RPG cycle rides off into the sunset.

Regards,

Jim Langston

-----Original Message-----
From: Feroz Khan [mailto:believeina@yahoo.com]
Sent: Wednesday, May 22, 2002 4:07 AM
To: rpg400-l@midrange.com
Subject: Difference bet. Primary and Full procedural file.


Dear friends,

Just started learning RPG. Could you please tell me
what is the difference between primary and full
procedural file, we use in F specifications. Can I
chain on both these files ?

Thanks
Feroz

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