ClearCase: Is it possible to deliver or rebase selectively?

Question

1. When delivering stream A to stream B, is it possible only to deliver selected elements (directories to be precise) from A to B?
2. When rebasing a stream A from a ba

Answer 1

With ClearCase UCM:

• what you are delivering are baselines or activities
• what you are rebasing are baselines only.
  (and only baselines coming from the direct parent Stream, at that).

So if you directories or elements are the only items of an activity, and that activity doesn't depend on other activities (which can happen when a deliver to another Stream has already been done: all present activities are "linked together" by a technical baseline), then you can deliver just those items (by delivering only that activity).

If your directories and files are then only difference between the source baseline and the foundation baseline you are about to change on the Stream you are rebasing, you can rebase just those items.

But the fact is: it is difficult to make partial deliveries or rebases with ClearCase.