Use case diagram about System Hotel

问题:

I would like to show use case diagram me.What is correct use case diagram me about system hotel?

http://i.stack.imgur.com/KPsZU.png

Note : - outside of system boundary is comment, Not use case

sorry don't have reputation 10. Don't show image this.

回答1:

After a short review I would say that your use cases don't seem to be cut the right way. You are using <<include>> and <<extend>> in order to perform a functional analysis. This is not what use cases are all about. Each use case must show a piece of added value to its actor. I/E are a means of showing optionality for single UCs (means they can be added later in time or build a system with different level of value to the user). Showing a path of execution is something that goes completely into activity diagrams inside each use case.

As a take home message: If your UC diagrams start resembling a spider's web your design is likely broken.