Consider the sequence diagram given below for the use case Record a book order and answer the following questions.

Questions (5 marks)

a. Identify different symbols used in above sequence diagram and list them.

b. Identify two separate use cases represented in above diagram. Name them.

c. Explain the first use case (provided in top rectangle in diagram) in your own words based on the messages provided.

Record book order System buyer findBook (title or author or ISBN) Find Book Use Case listOfMatches (title, author, ...) 1 addToCart (ISBN) L--- for leach book desired confirmation checkout (account exists] displayAccountInfo (name, cc, ...) Open new account use case (no account] displayAccountSetup() (no account) enterAccountinfo (name, billingAddress, c. ) newAccountConfirmation confirmPurchase() EmailToSeller (purchaseInfo, purchaserinfo) email server