Re: Commit or Journal?

["David Gibbs" <devdmg@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 18 Sep 97 at 12:47, Tim Truax wrote:

> 2 users access the same account number at the exact same time in the
> same file and same interactive job and are presented with a full
> screen where 20 comment lines can be typed in. 

If the file is opened for update, only 1 of those users will actually 
get the record locked.  As soon as the record is retrieved, update 
the record with a flag to indicate that it's being maintained.  The 
other user's program should check this flag and disallow maintenance 
if it's set.

When the first user is done, re-read the record for update, clear
the flag, and update the fields.

david

--

David Gibbs
Sr. Software Engineer
Silvon Software
Westmont, IL
(630) 655-3313 x6479
http://www.silvon.com
mailto:david.gibbs@silvon.com

Opinions expressed are strictly my own and do 
not necessarily reflect those of my employer

... You'll only see your obstacles each time 
    you take your eyes off of your goal.

                   -- DMRoth
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