Re: Is is safer to define a file using SQL if you are using PF constraints?

["Simon Coulter" <shc@xxxxxxxxxxxxxxxxx>]

Hello Rob,

If you can't trust your colleagues to rebuild the database properly then 
nothing will 
save you.  Using SQL DDL is probably a safer approach -- at least the RI will 
be part of 
the creation process.  You will have to remove all trace of the original DDS 
from the 
system to remove the possibility of error.

If you use alter table (either CHGPF or via SQL) to rebuild the files rather 
than 
compiling them you will keep the RI constraints and the data.

Can't you use RUNSQLSTM to rebuild the database rather than SQLRPG?  Or do you 
need 
additional programmatic control?

Regards,
Simon Coulter.

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//--- forwarded letter -------------------------------------------------------
> X-Mailer: Worldtalk (NetTalk for Windows NT 4.5-g5)/MIME
> Date: Wed, 12 Apr 2000 13:34:18 -0500
> From: "Rob Berendt" <rob@dekko.com>
> To: MIDRANGE-L@midrange.com
> Reply-To: MIDRANGE-L@midrange.com
> Subject: Is is safer to define a file using SQL if you are using PF 
>constraints?

> 
> I am not here to start a DDS versus SQL war but I have a 
> question I am hoping you can help me hash out.
> 
> You cannot add PF constraints using DDS.  I have some files 
> that I've built using DDS and then added RI on the files using 
> the ADDPFCST after they were built.  I am afraid that collegues 
> will modify the files and when they recompile all of the Referential 
> Integrity will be lost.  I was thinking that it would be safer 
> to define the files using SQL and write an SQLRPGLE program to 
> rebuild them.  I document the RI in the DDS but who reads that?

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