Hi, Reading some of the recent emails on Zope's transaction engine, something popped into my head which isn't mentioned in the book. How visible are Zope's transactions? I'm talking about the difference between read committed, read uncommitted and serializable transactions that you get in relational databases. I'm guessing that objects in Zope which participate in transactions can see changes made during that transaction? Is it possible to change this, so other transactions can read uncommitted data? Clearly, this isn't so important on smaller sites - but what happens when you start using Zope in high-transaction-volume sites? I'm just curious... ;) Cheers, Dan _________________________________________________________________ Daniel Fairs | daniel.fairs@spiderplant.net | www.spiderplant.net