Part 1: Article Roger Sessios - Comparision of the Top Four Enterprise Architecture Methodologies Flashcards
What are the top four EA methodologies?
- Zachman Framework - defined as a taxonomy
- The Open Group Architectural Framework (TOGAF) - defined as a process
- The Federal Enterprise Architecture (FEA) - viewed as an implemented enterprise architecture or as a proscriptive methodology
- Gartner Methodology - best describes as an enterprise architectural practice
What are the six descriptive foci in the Zachman Framework?
- Data
- Function
- Network
- People
- Time
- Motivation
What are the six player perspectives in the Zachman Framework?
- Planner
- Owner
- Designer
- Builder
- Subcontracter
- Enterprise
What are three suggestions of the Zachman framework?
- Every architectural artifact should live in one and only one cell. There should no ambiguity about where a particular artifact lives,
- An architecture can be considered a complete architecture only when every cell in that architecture is complete.
- Cells in comlumns should be related to ech other.
TOGAF divides an enterprise architecture into four categories. Which are these?
- Business architecture: describes the processes the business uses to meet its goal
- Application architecture: describes how specific applications are designed and how they interact with each other
- Data architecture: describes how the enterprise datastores are organized and accessed
- Technical architecture: describes the hardware and software infrastructure that supports applications and their interactions
TOGAF describes itself as a “framework”, but what is the most important part of TOGAF?
The most important part of TOGAF is the Architecture Development method (ADM). ADM is a recipe/process for creating architecture.
What is the difference between Zachman and TOGAF?
Zachman tells you how to categorize your artifacts. TOGAF gives you a process for creating them.
TOGAF views the world of EA as a continuum of architectures, ranging from highly generic to highly specific. How does this called?
Enterprise Continuum
It views the process of creating a specific enterprise architecture, as moving from generic to the specific.
Name the Enterprise Continuum of TOGAF from most generic to most specific.
- Foundation Architectures: these are architectural principles that can, theoretically, be used by any IT orgnization.
- Common System Architectures: these are principles that one would expect to see in many - but perhaps not all - types of enterprise.
- Industry Architectures: these are principles that are specific across many enterprises that are part of the same domain.
- Organizational architectures: these are the architectures that are specific to a given enterprise (such as MedAMore).
Describe the Federal Enterprise Architecture (FEA).
Simply consisting of five reference models, one each for performance: business, service, components, technical, and data.
What are the five FEA reference models?
- the Business Reference Model (BRM): gives a business view of the various functions of the federal government
- the Components Reference Model (CRM): gives a more IT view of systems that can support business functionality.
- the Technical Reference Model (TRM): defines the various technologies and standards that can be used in building IT systems.
- the Data Reference Model (DRM): defines standard ways of describing data.
- the Performance Reference Model (PRM): defines standard ways of describing the value delivered by EA
What are the 4 steps of the FEA process?
Step 1. Architectural Analysis
Step 2. Architectural Definition
Step 3. Investment and Funding Strategy
Step 4. Program Management Plan and Execute Projects
How is Gartner defined?
As a practice.
It is the EA practice of one of the best know IT research and consulting organizations in the world: Gartner.
