data_music_ecto_book.uml

@startuml

'-----------------------------------------------------------------------
' Style

!include default_style.iuml

skinparam backgroundColor transparent

hide methods

'-----------------------------------------------------------------------

' title E/R model for data model in the Ecto Book

entity Albums {
        id : uuid {id}
        title : string
        released : date
}

entity Artists {
        id : uuid {id}
        name : string {unique}
}

entity Tracks {
        id : uuid {id}
        title : string
}

entity Genres {
        id : uuid {id}
        name : string {unique}
}


Albums "1" -- "*\r{ordered}" Tracks: contained <
note bottom on link: N:1\nordered
Albums "*" -- "*" Genres: covered <
note bottom on link: N:N
Albums "*" -left- "1" Artists: released <
note top on link: N:1
Artists "*" -- "*" Tracks: performed_by <
note bottom on link: Derived from\nreleased and\ncontained\n(through)
Artists "*" -- "*" Tracks: featuring <
note bottom on link: Just a\nparticipation
@enduml