Components of OeGAF

OeGAF consists of four main architectures as follows:

(a) Business Architecture
(b) Solution Architecture
(c) Information Architecture
(d) Technical Architecture

Each of the architecture has a corresponding Reference Model. Each Reference Model describes a framework to define and organise the architecture elements.

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The four OeGAF Reference Models are:
The Business Reference Model (BRM) describes the different lines of business and the associated government functions of the Oman Government that cut across the boundaries of different agencies.

The Solution Reference Model (SRM) describes the common applications and application components that can be shared across the Oman Government. It includes the technical standards and security considerations pertaining to the design and implementation of solutions and applications.

The Information Reference Model (IRM) lists the data definitions and data elements of common and shared data that are used across the Oman Government. As part of the initial baseline scope, IRM describes the data pertaining to ‘Person’, ‘Establishment’ and ‘Land’ data hubs which are commonly used by various agencies’ applications. It also defines technical standards, design and security considerations and best practices related to the management of data.

The Technical Reference Model (TRM) defines the infrastructure technologies and their respective technical standards to enable better system integration and interoperability across the Oman Government. It also defines the security considerations and standards related to the infrastructure technologies.

As shown in the Figure EA-3 above, security considerations and standards for the four architectures of OeGAF are defined in the respective Reference Models.
The BRM provides the insight for identifying potential government functions for streamlining and optimisation of business processes, and for consolidation and integration of IT systems. It also aids the discovery of data required by the government functions.
The SRM follows up on the recommendations by the BRM to consolidate and integrate IT systems to support the streamlining and optimisation of government functions. It references the IRM’s data hubs and data management technologies for the development and deployment of applications to support the identified government functions. The SRM also leverages on the TRM’s infrastructure technologies and technical standards. 

The IRM establishes common and shared data by representing them as data hubs through BRM. The IRM also identifies data management technologies which are referenced by SRM to develop and deploy application systems. In addition, the IRM leverages on the infrastructure technologies and technical standards in the TRM to ensure secure and effective data management.

The TRM provides references to the infrastructure technologies and their respective technical standards. The TRM defines the fundamental technology building blocks that are required and implemented by the Oman Government