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====== View ======

[[public:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]]

===== Discussion =====

A View presents selected information about a subject to address identified stakeholder concerns in accordance with one or more [[public:99_annexes:annex-b-terms-and-definitions:v:viewpoint|Viewpoints]].

The subject of a View may be a:

  * [[public:99_annexes:annex-b-terms-and-definitions:s:system|System]]
  * System element
  * [[public:99_annexes:annex-b-terms-and-definitions:d:domain|Domain]]
  * Organization
  * Process
  * [[public:99_annexes:annex-b-terms-and-definitions:m:model|Model]]
  * Architecture
  * Federation
  * Other subject of interest

A View selects and presents only the information needed to address its specified concerns. It does not attempt to reproduce every characteristic of its subject.

A View may specify or contain:

  * Selected Model elements
  * Relationships among those elements
  * Information-selection conditions
  * Tables, diagrams, matrices, text, or other renderings
  * Analytical results
  * Applicable assumptions and [[public:99_annexes:annex-b-terms-and-definitions:c:constraint|Constraints]]
  * Relationships to other Views
  * Evidence that the governing Viewpoint is satisfied

A View conforms to a Viewpoint when it addresses the concerns and satisfies the conventions, selection criteria, presentation rules, and other requirements established by that Viewpoint.

In [[public:99_annexes:annex-b-terms-and-definitions:s:sysml|Systems Modeling Language Version 2 (SysML v2)]], a View is a rendered presentation of selected Model information. A View Definition specifies how the View is constructed, including the conditions that select Model content and the rendering used to present that content. A View may satisfy one or more Viewpoints.

===== Definition =====

//representation of a subject that presents selected information to address specified stakeholder concerns in accordance with one or more Viewpoints//

===== Source =====

Aligned with ISO/IEC/IEEE 42010 architecture-description concepts and the [[https://www.omg.org/spec/SysML/2.0/Language/PDF|OMG Systems Modeling Language Version 2.0 Language Specification]] treatment of Views, View Definitions, Viewpoints, Model-content selection, and rendering.

===== Note =====

A View is distinct from a Viewpoint. A Viewpoint establishes the concerns and conventions governing the View. The View is the representation produced in accordance with those concerns and conventions.

A View is also distinct from a Model. A Model represents selected aspects of a subject for a defined purpose. A View selects and presents information from one or more Models to address particular stakeholder concerns.

A diagram may be one rendering within a View. A View is not limited to a single diagram and may include text, tables, matrices, calculations, analytical results, and other representations.

===== Example =====

A security-assurance View presents trust boundaries, information flows, identities, security controls, threats, residual risks, and supporting Evidence for a particular System. It selects and renders this information according to the requirements established by the security-assurance Viewpoint.

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