Home/ Questions/Q 67699
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-10T19:18:03+00:00

I’m just wondering about large projects – say an airlines reservation system, how many

  • 0

I’m just wondering about large projects – say an airlines reservation system, how many classes/objects it is likely to have.

Objects: customer, airplane, airport, route, ticket, order. That’s about all I can think of. The project will probably be hundreds of thousands of lines of code, so are there likely to be more classes (that do un-object related things)?

If so, how many classes are there likely to (roughly) be? How many objects (as per my list so not 10,000 customer objects, how many different names) are there likely to be?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. There’s really no magic formula for calculating optimal number of classes. The architecture you described above may create a very, very simple airline reservation system. As you continue to refactor, add more features, and accommodate special cases, you could end up with many more classes, e.g., MealPreference, CouponCode, Terminal, Gate, Airline, Baggage, BaggageTransfer, RainCheck, FlightUpgrade etc.

    As you should (if you want to be agile), only code exactly what you need at the time, planning ahead for ease of extension. However, any project is going to grow in unanticipated ways over time.

    • 0