@startuml

'!include base.plantuml
!include status.plantuml
!include contact.plantuml

skinparam linetype polyline


class Country {
  {field}  + code\t\tString(2)\t\t<<Unique>>
  {field}  + name\t\tString(80)
  {field}  + notes\t\tText | None
           +  __repr__()\t\tstr
}

abstract CountryForeignKey {
     country_id\tCountry.id     {field}
   + country\t\tCountry         {field}
}


class LocationCode {
  {field}  + code\t\tString(8)\t\t<<Unique>>
  {field}  + description\tString(80)
  {field}  + notes\t\tText | None
           +  __repr__()\t\tstr
}

abstract LocationCodeForeignKey {
    location_code_id\tLocationCode.id
  + location_code\t\tLocationCode
}


class Location {
  {field}  + code\t\tString(30)
  {field}  + description\tString(80)
  {field}  + notes\t\tText | None
  {field}    <<Unique>>\n\tlocation_code_id\n\tcode
           +  __repr__()\t\tstr
}

abstract LocationForeignKey {
    location_id\tLocation.id
  + location\t\tLocation
}






Versioned         <|-[#blue]-  Country
StatusForeignKey  <|-[#blue]-  Country
Country           *--          CountryForeignKey


Versioned         <|-[#blue]-  LocationCode
StatusForeignKey  <|-[#blue]-  LocationCode
LocationCode      *--          LocationCodeForeignKey
CountryForeignKey <|-[#blue]-  LocationCode
ContactForeignKey o..          LocationCode


Versioned         <|-[#blue]-  Location
StatusForeignKey  <|-[#blue]-  Location
Location          *--          LocationForeignKey
LocationCodeForeignKey <|-[#blue]-  Location
ContactForeignKey o..          Location

@enduml