Deployment Spec

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A Deployment Specification (spec) specifies parameters guiding deployment of an artifact, as is necessary with most hardware and software technologies. A specification lists those properties that must be defined for deployment to occur, as represented in a Deployment diagram. An instance of this specification specifies the values for the parameters; a single specification can be instantiated for multiple artifacts. 

These specifications can be extended by certain component profiles. Examples of standard Tagged Values that a profile might add to a Deployment Specification are «concurrencyMode» with Tagged Values {thread, process, none} or «transactionMode» with Tagged Values {transaction, nestedTransaction, none}.

The following example depicts the artifact RepositoryApp deployed on the server node, as per the specifications of RepositoryApp, instantiated from the Deployment Specification SystemSpec.


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OMG UML Specification

The OMG UML specification (UML Superstructure Specification, v2.0, p. 190) states:

"A deployment specification specifies a set of properties which determine execution parameters of a component artifact that is deployed on a node. A deployment specification can be aimed at a specific type of container. An artifact that reifies or implements deployment specification properties is a deployment descriptor."