Use Case

[Dmorley]

I'm quite bad at these, but need to start doing them more!! Please have a look at the attached Use Case diagram, it has most of the cases i can envisage for the system.

However, it looks confused & unorganised - any 'Use Case' experts have any suggestions on how to restructure this to be more coherent?

Notes:

The 'Search for Orders' case should be available to all actors. Every actor should be able to search for, view & output order details.

The Product Buyer is the actor that creates orders.

The System Administrator has cases specific to their role, but should have complete system access (they could create an order if they needed to).

Thanks