Re: update in single page subfile

["Booth Martin" <Booth@xxxxxxxxxxxx>]

 Do not lock a record til you are ready to update it.  Otherwise users will
hunt you down and explain things to you.  Then their bosses will hunt you
down and explain things to you.  Then your boss will hunt you down and
explain things to you.

The easiest way I've found is that when I originally write the subfile
record I include a hidden field which is a complete copy of the fields I
care about (or the whole record).

When I process the subfile for changes I process one record at a time.  The
first thing I do is to compare the current version of the record with the
original version in the hidden field.   If they are identical I continue
processing the record.  If they are different then another user has already
changed the record at another work station.  Knowing the record is already
changed in some way alerts you to a potential corruption of data.  How you
deal with that is another matter, but at least you know.

Locking lots of records is not a solution that will win you praise though.


---------------------------------------------------------
Booth Martin   http://www.MartinVT.com
Booth@MartinVT.com
---------------------------------------------------------

-------Original Message-------

From: rpg400-l@midrange.com
Date: Monday, October 14, 2002 02:19:28 PM
To: rpg400-l@midrange.com
Subject: update in single page subfile

Hi
I want to update records in subfile which is having thousands
records(lessthan 10k)..(reading this records is done in single
page)...please suggest me which subfile is good
(loadall/expand/single page)to update and at the same time i
should lock the records without giving chance to others to
update...how can i lock the records?
best Regards
Murali