View DNDAF:SV-10c Systems Event-Trace Description Subview

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Title

SV-10c Systems Event-Trace Description Subview

Version & Date

1.6 See DNDAF Release History

Introduction

The SV-10c subview is part of the DNDAF System View.

The System View-10c (SV-10c): Systems Event-Trace Description provides a tracing of the system functions that occur in a given scenario or the critical sequence of events. The SV-10c is typically used in conjunction with the Systems State Transition Description (SV-10b) to describe the dynamic behaviour of system nodes.

Purpose

The SV-10c sub-view is valuable for moving to the next level of detail from the initial systems design, to help define a sequence of functions and system data interfaces, and to ensure that each participating system, system function, or human role has the necessary information it needs, at the right time, in order to perform its assigned functionality.

Background

Systems Event/Trace Descriptions are sometimes called sequence diagrams, event scenarios, and timing diagrams. The SV-10c may reflect system-specific aspects or refinements of critical sequences of events described in the Operational Event-Trace Description (OV-6c).

Description

Definition

The Systems Event-Trace Description provides a time-ordered examination of the system data elements exchanged between participating systems (external and internal), system functions, or human roles as a result of a particular scenario. Each event-trace diagram should have an accompanying description that defines the particular scenario or situation. SV-10c in the System View may reflect system-specific aspects or refinements of critical sequences of events described in the Operational View.

Detailed Description

The SV-10c allows the tracing of actions in a scenario or critical sequence of events. With time proceeding from the top of the diagram to the bottom, a specific diagram lays out the sequence of system data exchanges that occur between systems (external and internal), system functions, or human role for a given scenario. Separate diagrams should depict different scenarios. SV-10c can be used by itself or in conjunction with an SV-10b to describe dynamic behaviour of system processes or system function threads.

Subview DADM Elements

The DADM entities and attributes provided below are the elements that this sub-view is responsible for creating:

 

 

Presentation

  • UML collaboration diagram
  • UML sequence diagram

Examples

See:

  • p139 Figure 3.26.1 in DND/CF Architecture Framework (DNDAF)  Volume 2: DND/CF Views and Sub-Views

Prerequisites

The SV-10a and SV-10b are the prerequisites for this sub-view:

  • SV-10a. Systems State Transition uses the Systems Rules Model.
  • SV-10b. Systems Event Trace Description uses the Systems Transition Description.

Note: SV-10a, 10b and 10c represent the dynamic aspect and behaviour of the system. They are closely related and whenever applicable these sub-views are modeled together.

 

See DNDAF Subview Dependencies

 

Comments

Other Frameworks

See also:

References


Category:Framework -> Specification
Category:Framework -> Subview

Categories:

 

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