RE: setting up a foreign key

Granted I'm not sure what I'm doing but, Isn't this backwards? Table 'Customer' should be the parent and 'CustomerGroup' should be the child. I thought the FK should be on the child table of CustomerGroup.



-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Rob Berendt
Sent: Wednesday, December 14, 2016 10:48 AM
To: Midrange Systems Technical Discussion
Subject: Re: setting up a foreign key

Using this as a start:
CREATE OR REPLACE TABLE rob.CustomerGroup( CompanyId INTEGER NOT NULL, GroupId Integer not null, GroupDescription VARCHAR(100) ALLOCATE(20), primary key (CompanyId, GroupId));

CREATE OR REPLACE TABLE rob.Customer(
CompanyId INTEGER NOT NULL,
Account# Integer not null,
GroupId Integer not null,
primary key (CompanyId, Account#));

I tried to go into http://myibmi:2001 and use the GUI in there to select multiple keys. I cannot get some of the checking to work. It doesn't seem to respond to my clicking on it.
Since it's not my problem I won't open a pmr on it but I recommend you do so.

A work around is to use Run SQL scripts and try this:
alter table rob.Customer
add foreign key(CompanyId, GroupId)
references rob.CustomerGroup (CompanyId, GroupId) on delete no action on update no action ;

BCCing you an image which the list will strip off.



Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Tammy Scott <tscott@xxxxxxxxxxxxxx>
To: "midrange-l@xxxxxxxxxxxx" <midrange-l@xxxxxxxxxxxx>
Date: 12/14/2016 11:19 AM
Subject: setting up a foreign key
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



I am attempting to setup a foreign key using System I Navigator. I've
never created a foreign key before.

Here is my question and I did my best to explain it. I am very new to
all of this.

Customer table with columns.
CompanyID
Account#
Customergroup
Primary/unique key on customer table is CompanyID, Account#

CustomerGroup table with columns.
CompanyIDgrp
GroupID
GroupDescription
Primary/unique key on CustomerGroup table is CompanyIDgrp, GroupID

I need to setup a foreign key.

Does the Customer table need to have an index that has Customergroup as
part of the key in order for me to setup a foreign key? I cannot figure
out how to choose from the Customer Table, Customergroup.
Thanks for any help.
Tammy