Read the following case study description and answer the questions given below.

Consider a system for buying a new car. The customer should inspect the vehicle and chose the type, the color and the desired characteristic. If the customer finds his suitable vehicle, he gives his personal information to the vendor, then signs a sales contract. Before the final sale contract is delivered to the customer, the payment must be collected. At the end the transaction details must be recorded by the vendor.

a) Write a Use Case Buy a new Car by filling in the specific template.

b) Draw a use case diagram for describing the functional requirements of the above system.

Q2 What is a primary Actor in a Use-Case? How is it drawn in the diagram? How is that same actor represented in the DFD diagram?

Use Case Name: Primary Actor: Short Description: Trigger: Type external temporal Major inputs Description Major steps performed Important level Major outputs Description Information for steps