Terminology Syndication Feed Implementation Guide
0.1.0 - ci-build International flag

Terminology Syndication Feed Implementation Guide, published by Australian e-Health Research Centre. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/fhir-syndication-ig/ and changes regularly. See the Directory of published versions

Logical Model: Terminology Syndication Link

Official URL: https://ontoserver.csiro.au/syndication/StructureDefinition/syndication-link Version: 0.1.0
Draft as of 2026-06-29 Computable Name: SyndicationLink

An Atom ⟨link⟩ element (RFC 4287 §4.2.7) inside a syndication entry. The core Atom attributes carry the artefact URL and media type; the extension namespaces add file-level integrity and validation metadata.

Integrity

A consumer MUST be able to verify a downloaded artefact's integrity. At least one of md5Hash or sha256Hash SHOULD be present on every link whose rel is alternate or related. Where both are present, sha256Hash is authoritative.

The hash is computed over the byte stream that href resolves to, exactly as published — without any decompression or content-encoding negotiation.

Length

length is the byte count of that same stream. When present, it MUST match what the href resolves to.

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description Differentials, Snapshots, and other representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. syndication-link 0..* Base Terminology Syndication Link
Instances of this type can be the target of a Reference
... rel 1..1 code link relation (alternate | related)
... type 1..1 code media type of the linked artefact
... href 1..1 uri artefact download URL
... md5Hash 0..1 string MD5 hash of the artefact byte stream (32 hex chars)
... sha256Hash 0..1 string SHA-256 hash of the artefact byte stream (64 hex chars)
... validated 0..1 boolean publisher has re-verified the artefact

doco Documentation for this format

Summary

Mandatory: 0 element(3 nested mandatory elements)

Differential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. syndication-link 0..* Base Terminology Syndication Link
Instances of this type can be the target of a Reference
... rel 1..1 code link relation (alternate | related)
... type 1..1 code media type of the linked artefact
... href 1..1 uri artefact download URL
... md5Hash 0..1 string MD5 hash of the artefact byte stream (32 hex chars)
... sha256Hash 0..1 string SHA-256 hash of the artefact byte stream (64 hex chars)
... validated 0..1 boolean publisher has re-verified the artefact

doco Documentation for this format

Snapshot ViewView

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. syndication-link 0..* Base Terminology Syndication Link
Instances of this type can be the target of a Reference
... rel 1..1 code link relation (alternate | related)
... type 1..1 code media type of the linked artefact
... href 1..1 uri artefact download URL
... md5Hash 0..1 string MD5 hash of the artefact byte stream (32 hex chars)
... sha256Hash 0..1 string SHA-256 hash of the artefact byte stream (64 hex chars)
... validated 0..1 boolean publisher has re-verified the artefact

doco Documentation for this format

Summary

Mandatory: 0 element(3 nested mandatory elements)

 

Other representations of profile: CSV, Excel