Extract a sub-sequence of actions that appear in multiple places in use-case flows and express it separately.
Characteristics: Common. Basic.
Keywords: Common type of usage, reuse, same sub-sequence, similarities between flows.
Commonality: Reuse pattern consists of three use cases. The first, called
Common Sub-Sequence, models the sequence of actions that is to appear in multiple use cases in the model. The other use cases model usages of the system that share the common sub-sequence of actions. Obviously, there will be at least two of them.
In this pattern, the ...