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Certified Enterprise Architect Professional (CEAP) - Module 13: The Architecture Repository

The Architecture Repository:

An enterprise architecture repository (EAR) is a centralized storage system that stores and manages an organization's IT architecture components, standards, and relationships. It can also be used to document and maintain these components. 

An EAR can store a variety of architecture artifacts, including:

Data, Models and diagrams, Frameworks, Roadmaps, Capabilities, Design patterns, References, Principles, and Governance Register.

example:

The repository architecture style is widely used in various domains and applications. For example, database management systems (DBMS) are based on the repository style, where the database is the central repository and the applications are the components that query and update the data.

Six categories of information should feature within an Enterprise Architecture:

1) The Architecture Metamodel describes the application of an architecture framework, which is adopted by organisations.

2) The Architecture Capability states the processes, structures, and restrictions that support architecture repository governance.

3) The Architecture Landscape shows the state of the operating Enterprise at particular points in time.

4) The Standards Information Base defines the compliance criteria for work governed by architecture.

5) The Reference Library provides templates, guidelines, and models etc. to boost the construction of new architectures.

6) The Governance Log a record of governance activities carried out in the enterprise.

The Architecture Landscape:

Considering the varied and large quantity of stakeholder requirements, the Architecture Landscape is divided into three levels:

1) Strategic Architectures

Provides a long term overview.

Suggests new frameworks for operations and development activity, allowing for executive direction.

2) Segment Architectures

Provides a detailed model to organise and operationally coordinate change .

3) Capability Architectures

Outlines how the enterprise can provide support to a particular component of capability.

Used to provide an indication of current capability, target capability, and capability increments.

The Governance Log:

A Governance Log contains shared information concerning the continuing governance of projects.

Sustaining a shared source of governance information is essential.

Throughout a project, it is important that records are kept of any decisions made

Stakeholders often express interest in governance

The Standards Information Base:

The Standards Information Base is a source of specifications that must be followed by architectures.

The types of specifications are:

  1. Legal and Regulatory
  2. Industry
  3. Organisational

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