A node in the

Unified Modeling Language The Unified Modeling Language (UML) is a general-purpose, developmental modeling language in the field of software engineering that is intended to provide a standard way to visualize the design of a system. The creation of UML was originally m ...

(UML) is a computational resource upon which UML artifacts may be deployed for execution. OMG (2008).
OMG Unified Modeling Language (OMG UML), Superstructure, V2.1.2
'' p.199-210. There are two types of nodes: ''device'' nodes and ''execution environments''. * A device represents hardware devices: a physical computational resource with processing capability upon which UML artifacts may be deployed for execution. Devices may be complex (i.e., they may consist of other devices). * An execution environment represents

software container OS-level virtualization is an operating system (OS) paradigm in which the kernel allows the existence of multiple isolated user space instances, called ''containers'' ( LXC, Solaris containers, Docker, Podman), ''zones'' (Solaris containers), '' ...

s (such as operating systems, JVM, servlet/EJB containers, application servers, portal servers, etc.) This is a node that offers an execution environment for specific types of components that are deployed on it in the form of deployable artifacts. Execution environments can be nested. Nodes can be interconnected through communication paths to define network structures. A ''communication path'' is an "association between two DeploymentTargets, through which they are able to exchange signals and messages".

Usage

When modeling devices, it is possible to model them in several different ways: * Name a device using the type and make, for instance "IBM RS6000", "HP 9000". * Name a device using its intended function, for instance "Database Server", "High Speed Switch" * Name a device using the operating system deployed on it, for instance "Linux Server", "Solaris Server". Use tagged values to specify characteristics of devices / execution environments, for instance "Memory=2GB", "Disk Space=32GB", "Version=2.5.1".

References

Unified Modeling Language {{uml-stub