Architecting and designing : UML 2.5 : Model Elements : Structured Classifiers : Node
  
Node
A Node is a computational resource upon which software may be deployed for execution. There are two types of Nodes:
▪Device
▪ExecutionEnvironment
See also
Class
Activity
AssociationClass
FunctionBehavior
Interaction
OpaqueBehavior
State Machine
Stereotype
Device
ExecutionEnvironment
Collaboration
Component
Protocol State Machine
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Structured Classifiers