The event table for RMO is shown in Figure (a). Based on this event table, the use case diagram in Figure (b) was developed. The chapter illustrates detailed models (activity and system sequence diagrams) for Create new order.
Using the information provided in the RMO case descriptions and the figures in the book, create a fully developed use case description and system sequence diagram for each of the following Customer actor use cases:
(1) Update order and
(2) Create order return.
Now do the same for both of the Shipping actor usecases?

Order-entry subsystem Look up item Create new order Update order Customer transaction report Order fuifilment subsystem Look up order status Record back order order fulfillment report Create order return fulfillment Customer maintenance subsystem Provide Distribute promotional Marketing customer adjustment report Maintain Create information adjustment Catalog malntenance subsystem Create new catalog Create special Produce catalog activity Merchandising Maintain product information