generated: '2026-07-26'
method: derived
source: openapi/landgate-data-wa-ckan-openapi.yml, openapi/landgate-slip-public-arcgis-openapi.yml,
  openapi/landgate-slip-public-ogc-openapi.yml plus live response bodies probed 2026-07-26
note: |
  Two unrelated data models sit behind the Landgate public estate and they do not share
  identifiers. The catalogue model (CKAN) describes datasets ABOUT the data; the geospatial
  model (ArcGIS/OGC) describes the data itself. The only join between them is a human-entered
  URL on a CKAN resource pointing at a SLIP service, plus the LGATE-nnn product code Landgate
  uses in dataset titles.
domains:
  - name: catalogue
    surface: Data WA CKAN Action API
    entities: [Package, Resource, Organization, Group, Tag, License, Vocabulary]
  - name: geospatial
    surface: SLIP Public Services (ArcGIS REST + OGC)
    entities: [ServicesDirectory, Folder, MapService, Layer, Field, Feature, FeatureType]
entities:
  - name: Package
    domain: catalogue
    description: A dataset in the Data WA catalogue. 2,872 exist; 395 belong to Landgate.
    id_field: id
    natural_key: name
    key_fields: [id, name, title, notes, license_id, access_level, metadata_created,
      metadata_modified, author, author_email]
    source: openapi/landgate-data-wa-ckan-openapi.yml#ckanPackageShow
  - name: Resource
    domain: catalogue
    description: A distribution of a dataset — a file, a service URL or an API endpoint.
    id_field: id
    key_fields: [id, package_id, name, url, format, description]
    caution: Resource URLs frequently point at gated SLIP subscription endpoints that return
      HTTP 401 anonymously — a catalogued resource is not necessarily a reachable one.
  - name: Organization
    domain: catalogue
    description: The publishing agency. Landgate is `landgate` (395 packages on 2026-07-26).
    id_field: id
    natural_key: name
    key_fields: [id, name, title, description, package_count]
  - name: Group
    domain: catalogue
    description: Thematic grouping of datasets.
    id_field: id
  - name: Tag
    domain: catalogue
    id_field: name
  - name: License
    domain: catalogue
    description: Licence vocabulary. Landgate datasets are overwhelmingly `custom_other`
      (371 of 395), not an open licence.
    id_field: id
  - name: Vocabulary
    domain: catalogue
    id_field: id
  - name: ServicesDirectory
    domain: geospatial
    description: Root of the ArcGIS REST surface; lists folders and services.
    key_fields: [currentVersion, folders, services]
  - name: Folder
    domain: geospatial
    natural_key: name
    values: [Land_Monitor, Landgate_Public_Imagery, Landgate_Public_Maps, SLIP_Public_Services, Utilities]
  - name: MapService
    domain: geospatial
    description: One published map service, e.g. SLIP_Public_Services/Boundaries.
    natural_key: name
    key_fields: [documentInfo, maxRecordCount, maxImageWidth, layers]
  - name: Layer
    domain: geospatial
    description: A numbered layer inside a map service.
    id_field: id
    key_fields: [id, name, geometryType, extent, fields]
  - name: Field
    domain: geospatial
    key_fields: [name, type, alias]
    note: 'observed on LGA boundaries layer 14: objectid, boundary_id, type_code,
      type_description, feature_number, name, abs_lga_number, postcode, land_area,
      area_derivation'
  - name: Feature
    domain: geospatial
    description: A single geographic record returned by a query.
    id_field: objectid
    key_fields: [attributes, geometry]
  - name: FeatureType
    domain: geospatial
    description: The WFS projection of a layer, e.g. esri:DFES_Regions__DFES-015_.
    natural_key: typeName
relationships:
  - from: Package
    to: Resource
    kind: has_many
    via: resources[]
  - from: Resource
    to: Package
    kind: belongs_to
    via: package_id
  - from: Package
    to: Organization
    kind: belongs_to
    via: organization
  - from: Organization
    to: Package
    kind: has_many
    via: organization_show?include_datasets=true
  - from: Package
    to: Tag
    kind: has_many
    via: tags[]
  - from: Package
    to: License
    kind: belongs_to
    via: license_id
  - from: Package
    to: Group
    kind: has_many
    via: groups[]
  - from: ServicesDirectory
    to: Folder
    kind: has_many
    via: folders[]
  - from: Folder
    to: MapService
    kind: has_many
    via: services[]
  - from: MapService
    to: Layer
    kind: has_many
    via: layers[]
  - from: Layer
    to: Field
    kind: has_many
    via: fields[]
  - from: Layer
    to: Feature
    kind: has_many
    via: /query
  - from: Layer
    to: FeatureType
    kind: has_one
    via: the paired *_WFS map service
  - from: Resource
    to: MapService
    kind: references
    via: url (free-text service URL — not a foreign key, and often gated)
identifiers:
  - id: LGATE-nnn
    description: Landgate product code used in dataset titles and SLIP layer names, e.g.
      LGATE-217 Cadastre (Polygon), LGATE-233 LGA Boundaries.
    authoritative: true
  - id: AGENCY-nnn suffix on WFS type names
    description: WFS feature types carry the custodian agency code, e.g. DFES-015, DBCA-022,
      NNTT-001 — the SLIP public tier aggregates other WA agencies' data, not only Landgate's.
  - id: volume/folio
    description: Certificate of Title identifier for WA land. Not present on any public API
      surface — it lives behind the gated registry.
  - id: RESO UPI
    present: false
    note: not used; see review.yml
render: null