RE: Modernizing applications (was: Explaining single level store to non ipeople)

[rob@xxxxxxxxx]

Actually, I think it's uncommon for people to journal data.
1 - They seem to remember that under CPF 1 on the S/38 (or some earlier 
machine) that it had a negative performance impact.
2 - You have to manage them.  Or tell the system to manage them.  Leaving 
them out there forever can eat space.
3 - Changing their programs to use commitment control is not going to 
happen because it would involve making a change to a program that they've 
happily been using since the S/32 with only minor changes.

I had to drag the boss here into using journalling.  His last postponement 
was waiting until we got Mimix installed.  Now that we have it everyone 
loves it and they keep a SIGNIFICANT amount of journal data.  77 days 
worth.  Something about they really want to be able to look over two month 
ends - 3 if you time it right.  Sets a pattern...

Our ERP vendor doesn't use commitment control, RI, constraints or anything 
else like that.  They won't even use a primary key on their physical 
files.

Rob Berendt