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Version & Date

30th September 2011

Configuration History

See change record for the TRAK metamodel at http://trakmetamodel.svn.sourceforge.net/viewvc/trakmetamodel/trunk/?view=log

Definition

One of the TRAK stereotypes within the the TRAK metamodel and part of the Solution Perspective.

From the TRAK metamodel:

A System is something that has complex and emergent behaviour or properties. It is also therefore classically more than the sum of its parts. It may be a soft system (touchy-feely people for example - something you can’t touch) or it may be a classic hard system expressed as hardware.

A composite structure representing the physical, software and human resources (and their interactions) in an enterprise.

Covered by TRAK IPR and licenses

Tests For

Tests Against

Not a System if any of the following apply

  • the function(s) of the System can be purely described by the sum of the functions of the Resource with which the System is configured with i.e. no emergent behaviour
  • configured with purely Physical - not 100% but you would normally only expect behaviour from a combination of Physical and either Software or Human Resource i.e. not a pile of bricks or inanimate structure

Attributes

Inherited Attributes:

Covered by TRAK IPR and licenses

Implementation of TRAK Attribute Names and Values

The implementation of TRAK attributes in a tool is controlled by ‘TRAK. Implementation. Architecture Description Elements’ with respect to the case, spelling of attributes and format of values. See References section below.

Relationships

System_400.jpg

Full size: File:System.jpg

TRAK::System has the following relationships with other TRAK metamodel elements:

Inherited relationships:

Covered by TRAK IPR and licenses

Note: Roles such as System Authority, Design Authority, Manufacturer are defined using the SV-01 Solution Structure View  and the scope is defined using the extends to relationship between Resource and Role.

Configuration History

See change record for the TRAK metamodel at http://trakmetamodel.svn.sourceforge.net/viewvc/trakmetamodel/trunk/?view=log

Master Architecture View

Any System used within an architecture description of the system-of-interest must appear on a SV-01 Solution Structure View for the architecture description.

The SV-01 is the Master Architecture View for System.

Covered by TRAK IPR and licenses

Comments

Part of the Solution Perspective.

The current INCOSE Systems Engineering Handbook defines a system as:

an integrated set of elements, subsystems, or assemblies that accomplish a defined objective. These elements include products (hardware, software, firmware), processes, people, information, techniques, facilities, services, and other support elements.

This is why TRAK::System is defined as it is and why MODAF::System cannot be used in this sense.

A System need not be configured with anything - initially you might not have information to be able to describe the components. In this case it is a high level outline description and the components of the system can be defined later on.

A System could consist of purely Human Resource with no Physical or Software. In this case it would be a soft system.

Note: TRAK::System is quite different in definition from MODAF::System. This is why the TRAK and MODAF namespace prefixes (TRAK:: and MODAF::) are used here.

Other Frameworks

References

 

 

Category:Metamodel -> Stereotype
Category:Solution

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