• Subject: RE: Lag time on Index file add- followup
  • From: Tim Truax <truax@xxxxxxxxx>
  • Date: Thu, 21 May 1998 09:43:20 -0400
  • Organization: USPA

On Wednesday, May 20, 1998 10:18 PM, David Dunfield 
[SMTP:ddunfie@net-link.net] wrote:
> Access path immediate means that as records are added, changed or removed 
from a
> file, they are immediately reflected in the index. If a file (physical or 
> ) is open, the access path for the file is maintained immediate. If you 
specify a
> access path of delayed on a logical associated with a physical file, it 
will not
> me maintained until that logical file is opened. Depending on the number 
> changes to a access path, it may be completely rebuilt on open if *DLY is
> specified.

Here's what I read in the Softcopy book that made me wonder about the 
records actually being placed into the OPEN file: Current Access Path Maintenance (MAINT) Parameter

The MAINT parameter specifies how access paths are maintained for closed 
files.  While a file is open, the system maintains the access paths as 
changes are made to the data in the file.  However, because more than one 
access path can exist for the same data, changing data in one file might 
cause changes to be made in access paths for other files that are not 
currently open (in use).  The three ways of maintaining access paths of 
closed files are:

   Immediate maintenance of an access path means that the access path is 
maintained as changes are made to its associated data,
    regardless if the file is open.  Access paths used by referential 
constraints will always be in immediate maintenance.

Tim Truax

| 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

This thread ...

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

This mailing list archive is Copyright 1997-2019 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].