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Brian,

That hasn't been true in the 20 years I've been working on the platform...

The tale as I heard it, there were benefits to having a PF un-keyed back in
OS/400 v1 (or maybe it was 36/38?) during the recovery of a crashed system.

But that stopped being true long ago...

Charles

On Mon, Sep 27, 2021 at 1:37 PM Brian Parkins <goodprophet.bp@xxxxxxxxx>
wrote:

Indeed, but for DDS-defined Physical Files (pre-constraints) it was
deemed best practice to define keys in Logical Files - not the Physical
File itself. (Impact of change.)

Thx for calling that out, Charles.

Brian.

On 27/09/2021 17:44, Charles Wilt wrote:
I really hope your standards for SQL Tables have a primary key...

Just like your standards for PF should include a unique key.

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