OWL representation of UAF 1.2 core metaclasses and relationships. All entity classes extend arch:Element from the Linked.Archi core ontology.
Linked.Archi ontology aligned to the Unified Architecture Framework (UAF) version 1.2, an OMG standard (formal/2025-10-01 through formal/2025-10-07). UAF provides a unified architecture framework superseding DoDAF, MODAF, and NAF. It organizes architectural data across 10 viewpoints and 11 aspects, defining approximately 288 metaclasses across multiple domains. This ontology models the core entity types used across UAF viewpoints as OWL classes extending arch:Element, and the key relationships using the three-declaration pattern (unqualified predicate, qualified class, qualified property). This is not an official OMG document.
Linked.Archi
Linked.Archi UAF Ontology
Links a performer to the service it consumes.
consumes
Links a capability to another capability on which it depends for its delivery or operation.
depends on
Links a performer to the capability it exhibits or provides to the enterprise.
exhibits
Links a resource performer to the service it implements.
implements
Links a performer to the activity it performs.
performs
Links a performer to the service it provides to consumers.
provides
Links a resource-domain element to the operational-domain element it realizes or implements.
realizes
A specific, named instance of an organization that exists in the real world, as opposed to a type or template.
Actual Organization
A specific, named individual who fills a post or performs a role within the enterprise.
Actual Person
A specific, named instance of a post that exists within an actual organization.
Actual Post
A specific, named instance of a resource that exists in the real world, identified by serial number, name, or other unique identifier.
Actual Resource
A specific, named instance of a service that is deployed and operational in the real world.
Actual Service
A work product used to express an architecture, conforming to ISO/IEC/IEEE 42010:2011.
Architectural Description
A fundamental organization of a system embodied in its components, their relationships to each other and to the environment, and the principles guiding its design and evolution.
Architecture
The ability to achieve a desired effect under specified standards and conditions through a combination of ways and means to perform a set of activities.
Capability
Capabilities are implementation-independent and describe what is needed, not how it is achieved. They form the basis for capability-based planning across the enterprise.
A composite structure of resources, services, and personnel configured to deliver a specific capability.
Capability Configuration
A qualified relationship indicating that one capability depends on another capability.
Capability Dependency
An unfavorable circumstance or condition that may impede the achievement of enterprise goals or delivery of capabilities.
Challenge
A qualified relationship indicating that a performer consumes a service.
Consumes
An external or internal condition that motivates the enterprise to define its goals and implement changes.
Driver
A high-level statement of intent or direction for the enterprise, providing context for decision-making and capability planning.
Enterprise Goal
A specific, measurable target that contributes to the achievement of an enterprise goal within a defined time frame.
Enterprise Objective
A high-level aspirational description of what the enterprise seeks to achieve in the long term.
Enterprise Vision
A qualified relationship indicating that a performer exhibits a capability.
Exhibits
A resource-level function performed by a resource performer. Functions trace to operational activities and represent the implementation of operational behavior.
Function
A graphical and textual description of the operational concept showing the main operational performers and their interactions at a high level of abstraction.
High-Level Operational Concept
A qualified relationship indicating that a resource performer implements a service.
Implements
A resource type that is known and cataloged within the enterprise, representing a class of resources that may be instantiated.
Known Resource
An element that can have measures of effectiveness, performance, or suitability associated with it.
Measurable Element
A clear statement of the task together with the purpose, that clearly indicates the action to be taken and the reason therefore.
Mission
A resource that exists in nature and may be consumed or utilized by the enterprise, such as spectrum, water, or land.
Natural Resource
An activity performed in the conduct of an operation or business process. Operational activities are implementation-independent and describe what needs to be done at the operational level.
Operational Activity
An entity that acts on behalf of an operational performer, representing the binding between resource and operational domains.
Operational Agent
A composite structure representing the complete operational architecture including performers, activities, exchanges, and constraints.
Operational Architecture
A communication or interaction path between operational performers through which operational exchanges flow.
Operational Connector
A rule or restriction that governs the execution of operational activities or the behavior of operational performers.
Operational Constraint
A flow of information, energy, or materiel between operational performers or activities.
Operational Exchange
A logical entity that performs operational activities. An operational performer may be realized by one or more resource performers.
Operational Performer
A favorable circumstance or condition that can be exploited to achieve enterprise goals or deliver capabilities.
Opportunity
A specific real-world assemblage of people and other resources organized for an ongoing purpose. Organizations may be military units, government agencies, or commercial entities.
Organization
A resource owned or managed by an organization, including personnel, equipment, and facilities.
Organizational Resource
A qualified relationship indicating that a performer performs an activity or function.
Performs
A type representing a human individual who may fill posts and perform roles within the enterprise.
Person
An element that can be associated with temporal phases, enabling roadmap and evolution planning across architecture increments.
Phaseable Element
A position within an organization that may be filled by a person and carries specific responsibilities and authorities.
Post
A temporary endeavor undertaken to create a unique product, service, or result that delivers capability increments to the enterprise.
Project
A significant point or event in a project timeline that marks the completion of a deliverable or phase.
Project Milestone
A defined period within a project lifecycle during which specific work is performed and deliverables are produced.
Project Phase
A set of rules governing the format and transmission of data between systems or services.
Protocol
A qualified relationship indicating that a performer provides a service.
Provides
A qualified relationship indicating that a resource-domain element realizes an operational-domain element.
Realizes
A composite structure representing the complete resource architecture including resource performers, functions, connectors, and exchanges.
Resource Architecture
A communication or interaction path between resource performers through which resource exchanges flow.
Resource Connector
A flow of information, energy, or materiel between resource performers or functions.
Resource Exchange
A physical or logical entity that performs functions in the resource domain. Resource performers realize operational performers and may be systems, platforms, or human resources.
Resource Performer
A duty or obligation assigned to a post or person within the enterprise.
Responsibility
An item of value to the enterprise that requires protection, including information, systems, personnel, and facilities.
Security Asset
A restriction or requirement imposed to ensure the security of assets, systems, or information within the enterprise.
Security Constraint
A safeguard or countermeasure prescribed for an information system or organization to protect the confidentiality, integrity, and availability of security assets.
Security Control
A grouping of related security controls that address a common security concern or objective.
Security Control Family
A bounded security domain within which a defined security policy is enforced and a consistent set of security controls is applied.
Security Enclave
A mechanism to enable access to one or more capabilities, where the access is provided using a prescribed interface and is exercised consistent with constraints and policies as specified by the service description.
Service
A composite structure representing the complete service-oriented architecture including services, interfaces, contracts, and exchanges.
Service Architecture
An agreement between a service provider and consumer that specifies the terms, conditions, and quality of service parameters.
Service Contract
A flow of information or resources between services or between a service and its consumers.
Service Exchange
A function performed by a service, representing a discrete unit of service behavior that contributes to the overall service capability.
Service Function
A defined point of interaction through which a service is accessed, specifying the operations, protocols, and data formats available.
Service Interface
An individual, team, organization, or class thereof, having an interest in a system or its architecture.
Stakeholder
An operational, business, technical, or industry standard that applies to solution elements within the enterprise architecture.
Standard
A collection of standards that together define the technical environment for a set of solution elements.
Standard Profile
The abstract base class for all UAF metaclasses. Every concept in the UAF metamodel is a specialization of UAFElement.
UAF Element
A representation of a whole system from the perspective of a related set of concerns, conforming to a viewpoint.
View
A specification of the conventions for constructing, interpreting, and using an architecture view to frame specific system concerns.
Viewpoint
The complete enterprise considered across its entire lifecycle, encompassing all phases from inception through disposal.
Whole Life Enterprise