1. create a sequence diagram depicting a debit card purchase at a local retail store. Illustrate the sequence of events between a customer, the cashier, the Credit/Debit Card reader, and the bank. Be sure to place the events in the correct order and (using arrows) depict the direction of the event/actions occurring between the components.

2. create a use case diagram for a library depicting various (at least 5) activities and the actors involved in each case.