Is it possible to prevent users from defining new collections using Tamino security? I know it is possible to protect existing doctypes from being defined / undefined, but how could you stop an arbitrary collection from being created?

Currently Tamino does not provide any mechanisms to prevent a user from defining a new collection. When accessing Tamino via a web server it is possible however to limit the access only to certain collections by extending the Location in the web server configuration to include the name of the collection - e.g. “host/tamino/dbname/collname” - this way the user would only be allowed to access collection “collname” and for this collection you could deny a define for certain users.