Understanding TOGAF - Enterprise and Solution architecture ...
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Understanding TOGAF
About Functions and Capabilities
More about the structured approach to business architecture that underpins TOGAF and its artefacts
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Copyright Avancier Limited 2007 - 2016
The TOGAF content framework is not currently consistent
Organization/Actor catalogue
Organisation decomposition Org/Function matrix Functional decomposition
Actor/Role matrix Role catalogue
Business Scenario (Surely to Role, not Actor?)
Business Function/ Service catalogue
Process flow diagram
Process/Event/Control /Product catalogue
Process/Event/Control /Product catalogue
Process/Event/Control /Product catalogue
Avancier
Principles: If an association appears in an artifact, it is a candidate for the meta model.
Data Entity/Business Function matrix
Business Service/ Product catalogue
If an association does not appear in an artifact, it is a candidate for removal.
The important Function Service association does not feature in the SOA chapter. The important Process Service association is not represented in an Artefact. The Org/Function matrix (important to structured analysis) is mentioned in the text, and reflected in the meta model, but does not appear in an Artefact. The meta model lacks the Data Entity-Function association represented in an Artefact. The meta model lacks the Service-Product association represented in an Artefact. Actors and Organisation Units are distinct entities in the meta model, yet Actors are defined as including Organisation Units.
Actors being individuals, several associations to Org UniCt oorpAycrtiogrhtwAovualdnbceiebreLttiemr ittoeFdu2n0ct1io2n or Role.
How TOGAF's artifacts document a Business Architecture
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Principles catalogue
Business Service/ Product catalogue
!
Principle
Driver
Goal
Requirement Business Service
Driver/goal/objective catalogue
Business Function/ Service catalogue
Functional decomposition
Process/Event/Control /Product catalogue
Process flow diagram
Data Entity catalogue
Data Entity/Business Function matrix
Process
Function
Data Entity
Atomic Business Activity
IS (App) Service
Org Unit
Role
Actor
Org. Function matrix Business Interaction matrix Organisation decomposition
Organization/Actor catalogue
Role catalogue
Actor/Role matrix
Copyright Avancier Limited 2007 - 2016
TOGAF suggests 3 approaches to Business Architecture
Avancier
Driver
!
Principle
Goal Requirement
"The level and rigor of decomposition needed varies from enterprise to enterprise"
Process Modelling Define high-level Processes/Scenarios Decompose Processes to activities Map activities to Roles & Functions
Process
Data Entity
Business Service
Atomic Business Activity
Function
Structured Analysis "Identifies the key business Functions within the scope of the architecture, and
maps those Functions onto the Org units within the business."
Org Unit
IS (App) Service
Role
Actor
Use-case Analysis Identifies where Roles use Applications in performing Process steps, and defines the required IS (App) Services
Copyright Avancier Limited 2007 - 2016
TOGAF Principles
Avancier
Principles that underpin Structured Analysis, TOGAF and its artefacts, and relate Functions to Capabilities
1. Functions are independent of Organisation structure (8.4.1, 8.5). 2. Functions impose a structure on Activities sequenceable in Processes
(34.2.1). 3. Functions/Capabilities are defined by Services provided (35.6.3) 4. Functions are used to describe Capabilities (34.2.1).
Copyright Avancier Limited 2007 - 2016
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