ERD

erDiagram
  referral {
    referral_observation_id INT PK
    organisation VARCHAR PK
  }
  referral }|--|{ observation : referral_observation_id
  observation {
    referral_observation_id INT PK
    organisation VARCHAR FK
  }
  referral }|--|{ user_in_role : authorising_user_in_role_id
  referral }|--|{ user_in_role : last_review_user_in_role_id
  user_in_role {
    user_in_role_id INT PK
    organisation VARCHAR FK
  }
  referral }|--|{ patient : patient_id
  patient {
    patient_id INT PK
    organisation VARCHAR FK
  }
  referral }|--|{ organisation : organisation_guid
  organisation {
    organisation_id INT PK
    organisation VARCHAR FK
    organisation_guid VARCHAR
  }
  referral }|--|{ codeable_concept : code_id
  codeable_concept {
    code_id INT PK
    organisation VARCHAR FK
  }
  referral }|--|{ consultation : encounter_id
  consultation {
    consultation_id INT PK
    organisation VARCHAR FK
  }