apple watch - What is the difference between a UML node and a UML component? -

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i designing uml diagram apple watch extension. how should represent host app using uml ? uml node or uml component ? please note there can inter app communication between extension app , iphone app (host app).

uml nodes apparently used depict physical resources, watch node, whereas component understood software component. since want model software, go components (which nicely visualise plugging between extension , host).


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