TRAK Metamodel

The definition of the metamodel for TRAK (defines allowed AD elements and relationships i.e. tuples/ triples for the TRAK viewpoints and views). TRAK is a general systems-thinkers'/system engineering enterprise architecture framework. It is simple, user-friendly, pragmatic and not limited to IT.

• defines tuples / triples (declarative statements) that appear in TRAK viewpoints and views
• designed by systems engineers for others & based on need / typical application
• supports simple, pragmatic, no nonsense, just "good enough" way of addressing typical concerns (not populating a data model)
• metamodel (A3) for easy reference when modelling - see snapshot below for example
• defines each TRAK node and relationship type in architecture description)
• defines attributes/properties of each element type e.g. dublin core, security descriptors, safety-related
• provides tests for/against to determine what type to use when modelling using TRAK
• defines colours/ presentation for each element
• defines each relationship (between node)
• defines tuple set rules (combinations of nodes with relationships)
• provides rationale/justification for relationships
• released under GNU Free Documentation License
• written for users/architects/human beings - not specifiers or tool vendors
• designed to be used with TRAK Viewpoints document () - also on Sourceforge
• defines initial baseline against MODAF 1.2
• ontology description of metamodel at
• html description of metamodel at