Domain Modelling Cardinality

Let's now add cardinality information to the class diagram.

Add Cardinality to the Class Diagram

Here's what I came to in Miro:

Domain Diagram with Cardinality

Formalize the Class Diagram

Here's the class diagram formalized as MermaidJs:

classDiagram
    class Organizer {
    }

    class Attendee {
    }

    class Staff {
    }

    class User {
        id
        name
        email
    }

    class Event {
        id
        name
        start
        end
        venue
        salesEndDate
        salesEndDate
        status
    }

    class TicketType {
        id
        name
        price
        totalAvailable
    }

    class Ticket {
        id
        status
        createdDateTime
    }

    class QrCode {
        id
        generatedTime
        status
    }

    class TicketValidation {
        id
        status
        validationTime
        validationMethod
    }


    Organizer --|> User
    Attendee --|> User
    Staff --|> User
    Organizer "1" --* "0..*" Event: organizes
    Attendee --o Event: attends
    Staff --o Event: works at
    User "1" --* "0..*" Ticket: purchases
    Event "1" --* "0..*" TicketType: offers
    TicketType "1" --* "0..*" Ticket: categorizes
    Ticket "1" --* "0..*" TicketValidation: validated
    Ticket "1" --* "1..*" QrCode : has

Summary

Added cardinality information to the application's class diagram