Re: Multi-file logical needed

["Booth Martin" <Booth@xxxxxxxxxxxx>]

You are looking for a join logical file I believe. 

http://publib.boulder.ibm.com/iseries/v5r2/ic2924/info/rzakb/rzakbmst12
htm#HDRJOINS
 

  DDS Reference: Physical and Logical Files
Join logical files in DDS
Join logical files combine different fields from more than one physical file
into a single record. You must specify the JFILE keyword at the record level
for join logical files. 
Specify the entries in the following order to define a join logical file: 
File-level entries (optional) 
Record-level entries 
Join-level entries 
Field-level entries 
Key field-level entries (optional) 
Select/omit-field level entries (optional) 
Because only one record format is allowed in a join logical file, specify
these entries only once. 
Figure 2 shows a join logical file coding example. 
Figure 2. Join Logical File Coding Example
 
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+.
..8
00010A* Joins fields from two physical files into one record format
00020A          R RECORD1                   JFILE(PF1 PF2)
00030A          J                           JOIN(PF1 PF2)
00040A                                      JFLD(NAME NAME)
00050A            NAME                      JREF(1)
00060A            ADDR
00070A            PHONE
     A
 
You can find an explanation of file-, record-, join-, field-, key field-,
and select/omit field-levels in the DDS Concepts information Describing data
attributes using DDS topic. 
Refer to the DDS Reference: Concepts information for rules to use when
specifying keywords in DDS. 
 
 
[
---------------------------------------------------------
Booth Martin   http://www.MartinVT.com
Booth@xxxxxxxxxxxx
---------------------------------------------------------
 
-------Original Message-------
 
From: Midrange Systems Technical Discussion
Date: Tuesday, May 06, 2003 01:17:29
To: MIDRANGE-L@xxxxxxxxxxxx
Subject: Multi-file logical needed
 
 
Hi group,
 
I have a need for a logical file that uses several physical files.
 
We have 3 physical files with information about cars, and all 3 files
contain a frame number field (same length and attributes in all 3 files).
A frame can only exist in one of these three files at any time.
 
What I need is one single view (logical) over these 3 files, showing all
possible frame numbers that exist (for a prompt program).
 
Can this be done?  I already looked at join logicals and multi-format
logicals, but these don't do what I need.
 
I would like to be able to run through this logical file so that all
existing frame numbers are shown in order.
 
Thanks in advance for any suggestions.
 
Peter Colpaert
Application Developer
iSeries Team Leader
Honda Europe NV
Langerbruggestraat 104
B-9000 GENT
Belgium
Peter.Colpaert@xxxxxxxxxxxx
Tel: +32 9 2501 334
Fax: +32 9 2501 231
----------
Yoda of Borg are we: Futile is resistance. Assimilate you, we will.
----------
 
 
 
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