August 2018
Beginner
594 pages
22h 33m
English
Content preview from Software Architect's Handbook
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Decision/merge nodes
A decision occurs in a flow when there is some condition and there are at least two paths that branch from that decision. A label can be placed on each of the different branches to indicate the guard condition that would allow control to flow down the branch.
When you want to bring multiple alternate flows back to a single outgoing flow, a merge node is used. Both decision and merge nodes are graphically represented with a diamond symbol: