Is this UML UseCase Diagram correct

http://www.bloodworks.org/Admin/UseCaseS.jpg

Hi i was wondering if this use case diagram is correct. the User actor be开发者_高级运维comes a player type Actor. Or should i just have the other two actors link to the first 3 use cases ?

---

Actors are classifiers.

You can (and should) use ordinary "is-a" inheritance among actors to show the relationships.

Read this:

http://www.agilemodeling.com/artifacts/useCaseDiagram.htm

In particular, look at figure 4. Student is a generalization of International Student.

---

I think you should generalize your actors . you should make an arrow with a triangular head from your player type actors to your User actor

---

IMAGE

ok so would this be better ?