View TRAK:EVp-02 Capability Hierarchy Viewpoint



EVp-02 - Capability Hierarchy Viewpoint




8th December 2017


The EVp-02 - Capability Hierarchy Viewpoint is part of the Enterprise Perspective and one of the 24 TRAK Architecture Viewpoints.

It provides a way of describing the enduring capabilities needed to meet the enterprise’s goals and the dependencies between them. It also provides the means to create a hierarchy or taxonomy structure from capabilities.

It is the specification for the TRAK::EV-02 Capability Hierarchy architecture view.

Stakeholders Addressed

  • Builder of Enterprise
  • Developer of Enterprise
  • Maintainer of Enterprise
  • Owner of Enterprise

Full size:File:evp02StakeholderConcern 589.jpg

Concerns Addressed

What are the enduring capabilities the enterprise requires? How is capability measured?

Covered by TRAK IPR and licenses


Describes the capabilities required by the Enterprise / Enterprise Goal(s) and dependencies on other Capabilities.

Covered by TRAK IPR and licenses

It helps to keep the Capability name short and atomic since this makes it easy for re-use and you can then see what other Systems realise the same Capability or what enterprises share the same capability.

Although a capability is a form of activity it helps to avoid adding a common prefix like ‘To be able to’ - which might be a temptation for those that recognise what ‘TUSBAT’ stands for ;-)

Declared Tuples

Covered by TRAK IPR and licenses

Optional Tuples



If any of these optional metamodel elements are added then the appropriate TRAK Master Architecture View must be provided.

Covered by TRAK IPR and licenses


An EV-02 view shall contain:

  • at least one Enterprise (the subject of the view)
  • the subject Enterprise Enterprise must have at least one Capability (using Enterprise requires Capability)
  • If the subject Enterprise has one or more Enterprise Goals:
    • each Enterprise Goal must require at least one Capability (using Enterprise Goal requires Capability)
  • If the task stakeholder is concerned with quantifying capability (recorded in the MV-02):
    • at least one Metric (using Capability is quantified by Metric)


  • block diagram (blocks to represent Enterprise, Capability, Metric and Enterprise Goal)


File:EVp-02 example.gif

Covered by TRAK IPR and licenses


Views Needed to Construct

See Minimum Allowed View Sets

Covered by TRAK IPR and licenses

Consistency Rules

Covered by TRAK IPR and licenses

Configuration History

The TRAK Viewpoints project on Sourceforge ( maintains a version-controlled repository. The change record is at


The TRAK metamodel doesn’t contain the is a (specialisation / generalisation) relationship because creation of taxonomies is more concerned with organisation of collections of any architecture description element, not just capability, and associated with repository management.

Taxonomy diagrams of any type of architecture description element can be included with an architecture description as a non-conforming product (see Conformance with TRAK in TRAK Enterprise Architecture Description document).


Other Frameworks

See also:

There is no equivalent in DNDAF to the TRAK Enterprise Perspective - see Architecture Framework Comparison.


Category:Framework -> Viewpoint
Category:Framework -> Specification


  • Strategic

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