generated: '2026-06-20'
method: derived
source: openapi/*.yml component schemas + json-schema/*.json
notes: >-
  Entity-relationship graph derived from the NASA OpenAPI component schemas and
  the repo's json-schema/ files. NASA is a read-only data API with no shared
  identifiers across products; relationships exist within each product family
  (Mars Photos, DONKI, NeoWs) rather than across them.
entities:
  - name: ApodImage
    api: APOD
    schema: json-schema/apod-image.json
    id_field: date
  - name: RoverPhoto
    api: Mars Rover Photos
    schema: json-schema/rover-photo.json
    id_field: id
  - name: Rover
    api: Mars Rover Photos
    schema: json-schema/rover.json
    id_field: id
  - name: Camera
    api: Mars Rover Photos
    schema: json-schema/camera.json
    id_field: id
  - name: NearEarthObject
    api: NeoWs
    schema: json-schema/near-earth-object.json
    id_field: neo_reference_id
  - name: CloseApproach
    api: NeoWs
    schema: json-schema/close-approach.json
  - name: CoronalMassEjection
    api: DONKI
    schema: json-schema/coronal-mass-ejection.json
    id_field: activityID
  - name: SolarFlare
    api: DONKI
    schema: json-schema/solar-flare.json
    id_field: flrID
  - name: GeomagneticStorm
    api: DONKI
    schema: json-schema/geomagnetic-storm.json
    id_field: gstID
  - name: EpicImage
    api: EPIC
    schema: json-schema/epic-image.json
    id_field: identifier
relationships:
  - from: RoverPhoto
    to: Rover
    kind: belongs_to
    via: rover
  - from: RoverPhoto
    to: Camera
    kind: has_one
    via: camera
  - from: Rover
    to: RoverPhoto
    kind: has_many
    via: photos
  - from: NearEarthObject
    to: CloseApproach
    kind: has_many
    via: close_approach_data