• Subject: RE: PF File Definition questions...
  • From: Buck Calabro <mcalabro@xxxxxxxxxxxx>
  • Date: Fri, 15 Oct 1999 12:46:21 -0400

Rob,
My experience is that you can delete/recreate the PF or LF and the record
format level ID will remain the same.  The "level check signature" isn't
based on date/time (like the file level ID), but on the number, type and
size of the fields defined within the record.  You can make lots of changes
to a field (TEXT, COLHDG, EDTCDE, DFT come to mind) without creating level
check problems.  It appears that the level check signature is based on the
way the I/O buffer looks to the HLL program (which includes CL.)

Buck Calabro

> -----Original Message-----
> From: Rob Berendt 
> Sent: Friday, October 15, 1999 11:33 AM
> To:   MIDRANGE-L@midrange.com
> Subject:      RE: PF File Definition questions...
> 
> If I delete and rebuild a logical will it have the same file level 
> id or do I have to recompile all affected programs?
> 
> cbrown@che400.state.sc.us on 10/15/99 10:27:55 AM
> Please respond to MIDRANGE-L@midrange.com@Internet
> To:   MIDRANGE-L@midrange.com@Internet
> cc:    
> Fax to:       
> Subject:      RE: PF File Definition questions...
> 
> One of the reasons that I don't place a key on a physical file has to do
> with potential damage of an access path.  You can tell me whether this
> logic
> is still correct.  If the access path is damaged and the physical file is
> keyed, then the file would have to rebuilt from a restore.  If the
> physical
> file is not keyed, then the damaged the logical can be deleted and
> recreated
> without a restore.  Camille Brown  
> 
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