Martijn,

>What do DEFERRED constraints actually mean? When DO they start
>checking? And when don't they?

Deferred constraints are evaluated at commit, not at verb
execution. The architecture for them is in place - deferred
work, etc., but the amount of tracking necessary to implement
them was beyond the memory capacity of 1990 computers. We
now regularly keep more information - though not the right
information necessarily - to do this.


Regards,

Ann
www.ibphoenix.com
We have answers.