View MODAF:SV-11 Physical Schema View

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Overview

The SV-11 Physical Schema View is part of the MODAF System Viewpoint and one of the 47 MODAF views*.

Version & Date

Version 1.2.004.

* =  changed at 1.2.004

+ =  new at 1.2.004

The change history is derived from the definition of each MODAF view within the The MODAF System Viewpoint viewpoint defining document from www.mod.uk/modaf.

See MODAF Release History.

Purpose

From The MODAF System Viewpoint (SV) p44:

The SV-11 Physical Schema view defines the structure of the various kinds of system data that are utilised by the systems in the architecture.

Subject to Crown Copyright

Background

From The MODAF System Viewpoint (SV) p44:

The SV-11 provides an implementation specific data model that realises the logical data model presented in an OV-7, Information Model.

Implementation constraints may mean that one logical entity in OV-7 is in fact realised by more than one entity in SV-11 and vice versa.

Subject to Crown Copyright

Description

From The MODAF System Viewpoint (SV) p44:

SV-11 allows implementation-level detail of data structures to be modelled. The view serves several purposes, including:

  • Providing as much detail as possible on the system data elements exchanged between systems, thus reducing the risk of interfacing errors.
  • Providing system data structures for use in the system design process, if necessary.

SV-11 is an implementation-oriented data model that is used to describe how the information requirements represented in OV-7 are actually implemented for a given solution. The entities specified in SV-11 represent data elements (from the SV-6, Systems Data Exchange Matrix).

There should be a mapping from a given logical data model (OV-7) to the physical data model (SV- 11) if both models are used. This mapping is often not trivial (e.g. there may be conditional mappings), in which case a formal mapping language such as ISO10303-14 should be used (as M3 comments) against the data model or individual entities.

Standards associated with entities are also often identified in the development of the SV-11 view product; these should be recorded in the TV-1 Standards Profile.

Subject to Crown Copyright

Data Objects

From The MODAF System Viewpoint (SV) p44:

The data in an SV-11 can include:

  • System data entity

MODAF_SV11_mm_dataobjects_430.gif

Full size:File:MODAF SV11 mm dataobjects.gif

Subject to Crown Copyright

Presentation*

From The MODAF System Viewpoint (SV) p44:

  • Formal text data modelling language (e.g. SQL, ISO10303-11, etc.)
  • Topological (connected shapes)
  • UML class diagram

Subject to Crown Copyright

Configuration History

  • 1.2.004 removed SysML structural diagram from presentation

Comments

References

Other Frameworks

See also:

 

Category:Framework -> View
Category:MODAF -> View
Category:Solution

Categories:

 

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