[Zope] Zope programms for databases

[Ralph]

I'm new to Zope and made a small database application with zope (mostly DTML) 
to learn the idea behind Zope, but I'm not satisfied with the structure of my 
application.

I have for each table a Form (DTML-method) with 3 buttons (new,update,delete). 
Each button triggers a DTML-script "actionTable"

actionTable calls either a DTML-method to display a form (update, insert) or 
calling the zsql-method to delete a data record. The disadvantage with this 
structure is, that it is difficult to maintain  programs like this. I wish to 
have optimistic locking but to send variables to the next DTML-method is a 
hell. 

Example: I you have a database table with the rows id,name and desc I have to 
send all record values through all methods after the user is triggering 
update to secure that there is no concurrent update. But with my design 
approach it's not possible.

Is there someone who has a better design approach or an idea?