Question:

Sample solutions:

Task 2 : Activity diagram (10 points) Create an Activity diagram for the Use Case Register/Cancel Session from the Customer point of view. Remember that an Activity diagram sets the different Sequence diagrams in relation Use the following Sequence Diagram as basis for the customer login. System : Customer login(ID, password) alt invalid credentials] invalidCredentialsMessage0 else] validCredentialsAndLogin0 Base the rest of the Activity Diagram on the sample solution from register_ session. You can assume that the given customer and session id exist in the system. You do not have a Sequence diagram for the scenario Canceling a session, thus you can use an abstract action which you do not need to specify in detail. (See lecture slides example Purchase Order)