What is composite baseline in UCM and when it will be used?

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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

composite baselines

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”:

multiple levels

I wouldn’t recommended it, though, because of the “parasite baselines (explained briefly here and here)

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