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Editorial Team
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Asked: 2026-05-21T16:27:06+00:00

I am creating a Class Diagram for a simple booking system for the theater.

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I am creating a Class Diagram for a simple booking system for the theater. I would like to know if the diagram makes any sense and if anything needs to be changed (arrow directions) in order for it to be correct?

Thanks.
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Image URL: https://i.stack.imgur.com/zWiGW.jpg

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1 Answer

  1. Editorial Team

    Here are some recommendations that you’re free to incorporate or ignore as you see fit:

    • I don’t agree with the relationship between Show and Venue. It seems more natural to have a Booking maintain the relationship between a Show and a Venue.
    • I don’t see a Date for a Show anywhere. Did I miss it? That seems important.
    • Shows don’t have Seats; a Venue has Seats.
    • A Ticket ought to entitle you to a Seat in a Venue on a particular date. I don’t see that.
    • TicketType should be nothing but an enum.
    • Decompose User to have a Name, Address, and Credential classes. Separate the Credentials out from User.
    • A real payment system would need far more than what you have showing (e.g. CreditCard, etc.)

    I think your model needs a lot of work.

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