generated: '2026-07-24'
method: derived
source: openapi/infoway-terminology-service-api-openapi.json (definitions) + FHIR resource model
description: >-
  Entity-relationship graph derived from the RESTful terminology API definitions and the
  FHIR terminology resource model. The two surfaces are projections of one terminology
  content core: code systems and their entities/concepts, value-set subsets, concept maps,
  and distributable packages.
entities:
- name: CodeSystem
  fhir: CodeSystem
  key: id (codesystemid)
  fields: [id, name, url, fhirUri, latestVersion, versions]
  relationships:
  - {type: has_many, target: CodeSystemVersion, via: versions}
  - {type: has_many, target: Entity, via: entities}
- name: CodeSystemVersion
  key: version
  relationships:
  - {type: belongs_to, target: CodeSystem, via: codesystemid}
- name: Entity
  key: entityid
  relationships:
  - {type: belongs_to, target: CodeSystem, via: codesystemid}
- name: Concept
  fhir: Coding
  key: id (conceptid)
  fields: [id, name, codeSystemId, codeSystemName, enDisplayName, frDisplayName, active, subsets, properties]
  relationships:
  - {type: belongs_to, target: CodeSystem, via: codeSystemId}
  - {type: belongs_to, target: Subset, via: subsets}
- name: Subset
  fhir: ValueSet
  key: id (subsetid)
  fields: [id, name, url, fhirUri, latestVersion, versions]
  relationships:
  - {type: has_many, target: SubsetVersion, via: versions}
  - {type: has_many, target: Concept, via: concepts}
- name: SubsetVersion
  key: version
  relationships:
  - {type: belongs_to, target: Subset, via: subsetid}
- name: Map
  fhir: ConceptMap
  key: id (mapid)
  fields: [id, name, url, fhirUri, latestVersion, owner, domains, versions]
  relationships:
  - {type: has_many, target: MapVersion, via: versions}
  - {type: has_many, target: MapElement, via: concepts}
  - {type: references, target: Subset, via: targets}
- name: MapElement
  relationships:
  - {type: belongs_to, target: Map, via: mapid}
- name: ResourceLocation
  key: id
  fields: [id, name, url]
- name: Package
  key: id (packageid)
  fields: [id, name, url, status, owner, domains, versions, tags]
  relationships:
  - {type: has_many, target: PackageVersion, via: versions}
  - {type: has_many, target: PackageArtifact, via: artifacts}
- name: Notification
  fields: [username, target]
  note: Webhook-style subscription record (see asyncapi/canada-health-infoway-notifications-webhooks.yml).
render: null