Documentum: I have to make attribute A of a document, only if attribute B gets one particular value (if attribB="bang" then "make attribA reuired/NOT_NULL").
a) How can I do this with Oracle triggers (PL/SQL)?
b) How can I do this with Java?
c) or maybe even JS client-side validation? (IMHO, last, emergency case)
You can do it via java script validation. In java script you can check if attribute Ba has a value 'BANG' then only proced otherwise pop-up alart message.