• Subject: RE: PF File Definition questions...
  • From: John P Carr <jpcarr@xxxxxxxxxxxx>
  • Date: Fri, 15 Oct 1999 15:09:50 -0400

>My experience is that you can delete/recreate the PF or LF and the record
f>ormat 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

In addition,   You can change the keys of the file and NOT affect the level
check ID.

Becareful out there.

John Carr

| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com

As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2022 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.