On Wed, 19 Sep 2012 07:12:35 -0500, McKown, John wrote: >I guess, especially if you need to keep a lot of variables >in memory "in sync". Erg. add deposit amount to new account >field and subtract same amount to old account field. Can't >do that with a CS or PLO type instruction.
I don't think it's so useful for this kind of business transaction. Those would typically involve data that is kept on DASD. Another use for it is the filtering of exceptions. That could be used for the validation of data if the transaction aborts due to an exception referencing the data. Tom Marchant
