问题
What is Composite baseline in UCM?
When it will be used? Will it be used mainly when we have multiple components?
回答1:
The reference on "composite Baselines" is: "Best practices for using composite baselines in UCM".
Introduced in ClearCase v2002, composite baselines are a mechanism for grouping baselines into a collection. One baseline is designated as the composite, and other baselines become members of the composite
You do not necessarily have to use composite baselines when you have multiple components, but:
If you want to remember the set of baselines existing at a given point on your Stream, then having a rootless component able to record of the baseline of its member is useful.
In theory, you can have "composites of composites":
I wouldn't recommended it, though, because of the "parasite baselines (explained briefly here and here)
来源：https://stackoverflow.com/questions/9613911/what-is-composite-baseline-in-ucm-and-when-it-will-be-used