Discover Ambiguities Or Omissions

Discover Ambiguities Or OmissionsAn automatic ticket issuing form sells cultivate tickets. Users drive their destination, and input a credit lineup and a personal identification number. The rail ticket is issued and their credit card account presenced with its cost. When the practicer presses the spring up button, a menu display of potential destinations is activated along with a message to the substance abuser to select a destination. Once a destination has been selected, users argon requested to input their credit card. Its validity is checked and the user is thence requested to input a personal identifier. When the credit transaction has been validated, the ticket is issued.Ambiguities and omissions complicateCan a client buy several tickets for the same destination together or must they be bought integrity at a clock?Can customers cancel a request if a mistake has been made?How should the agreement respond if an invalid card is input?What happens if customers try to pu t their card in before selecting a destination (as they would in ambiance machines)?Must the user press the start button again if they wish to buy some other ticket to a different destination?Should the establishment only sell tickets between the station where the machine is situated and direct connections or should it include every possible destinations?What type of input device (touchscreen vs. keyboard)?Ticket pricesRoom on train (assumes tickets have times on them)Train departure and arrival times. Do customers buy tickets for a specific train? Or for any trip along the route? (If the latter, then no way to tell if all the seating on a train are sold out, nor can you do seat assignments.)Seat assignments (see above)Print receipt?Rewrite the above comment exploitation the structured approach described in the study text. Resolve the identified ambiguities in some appropriate way.Function Give customer a rail ticket, and charge credit account or take cash from customer and give the customer, a rail ticket.Description Determine customers destination, calculate the charge for the trip, and charge the customer the appropriate amount. If charge is complete, imprint the ticket, otherwise, print no ticket, and report error to customer.Inputs Destination, credit card number and evenfall.Outputs Tickets, error messagesAction Ask the customer for their destination, when input, calculate the total, and prompt to insert a credit card, prompt customer for PIN, prompt customer that the transaction is taking place, if successful print the ticket and cede to start state, if unsuccessful, ask customer to swipe their card again and re-input the PIN. If unsuccessful again, prompt that the transaction has failed, and return to start state.Requires Destination, credit card number and PINPre-condition NonePost-condition NoneSide effects dismantle to the customers credit accountWrite the user requirements definitions.The services provided for the user and the n on-functional system requirements should be described. Also description may use natural language, diagrams or other nations that are understandable by customers. Product and process standards which must followed should be specifiedThe actors in the system are the passenger, the counter clerk and the reservationsystem consisting of form affect, reservation, fare computation, ticket processing,ticket printing, collection of fare amount and posting as sub-systems.The passenger is a passive user-actor who initiates the process and obtains theticket(s), a goal of measurable value. The counter clerk is an active user-actor,who triggers the system and has the role of issuing the tickets with the responsibilityof collecting the recompense fare amount from the passenger, which is a measurablevalue. Predesigned and deployed ticket reservation system at the back end is asystem actor-user to ensure that ticket processing is done correctly and differentsystem statuses are updated on issuing o f tickets. This actor has an active role andresponsibility at the back end.Write the system requirements specifications. outline RequirementThe passenger has a prior knowledge of the reservation and ticketing system.The passenger arrives at the railway ticket counter and interacts with thecounter clerk low gear through an enquiry and then follows the process of formfilling, tendering, payment and collecting the tickets.Passenger accepts the ticket or leaves the counter.Passenger seeks information on fare, train timings and approachability of tickets.Passenger can have single ticket or multiple tickets.Journey begins on a day and will be over with one break in between.Passenger is identified by name, age, sex and address.Trains are identified by name and number.No receipt is issued for money transacted.Output of the system is ticket(s) with details.The process is triggered through a form filled by the passenger detailing therequirements of tickets, train, date, etc.A form is used f or each train. If the journey requires use of multiple trains,separate forms are used for each train.Draw a sequence diagram showing the actions performed in the ticket-issuing system. You may make any presumable assumptions about the system. Pay particular attention to specifying user errors.DatabaseTicketSystemDestination RequestDestinationFind DestinationCalculate Total course credit Card RequestCredit Card NoPin RequestValidateCardPinInvalid CardInsufficient CreditChargeCardTransactingPrint TicketWrite a set of non-functional requirements setting out its expected reliability and its response time.The ticket system shall respond to user inputs to provide tickets and charge accounts in a timely manner. The system shall continue to function so long as roll of ticket subject is in the machine, and a network connection is provided for the destination database and credit transactions. Upon receipt of the destination from the user, the database shall be accessed to determine the dist ance from the units location, to the desired destination, and calculate the appropriate fee. The unit shall then prompt the user to input their card information, and the unit shall verify that the card is a credit card, is valid, and has sufficient credit to be charged. Upon successful verification, the unit shall print a ticket, and return to its ready state, for the next transaction to take place. The reliability this system relies on the durability of the physical user interface, the network connection in the area the system is placed, the size of the ticket rolls that the unit can accept, and the mechanism for dispensing the tickets. The estimated time for a complete transaction would be about thirty seconds, full-grown twenty for the user interactions, five for validation and verification of the users account, and five for printing and dispensing the ticket.Develop a set of use-cases that could serve as a basis for sagacity the requirements for ticket-issuing system.Briefly d escribe the requirements validation process. Discuss all the checks that you have to perform to validate the above requirements in ticket-issue system1. Customer inserts her credit card into the machine.2. ATM checks the card number.3. ATM asks for the pin-code.4. User enters the pin-code.5. ATM requests database to validate the credit card.6. The action options are presented to the customer.7. Customer chooses to print out account information.8. ATM checks if enough paper is present print cartridge is not empty.9. ATM sends request to the database.10. ATM prints out the data and informs user of it.11. User removes the printout from the machine.12. Action options are presented again.13. Customer chooses a sum from the list.14. Customer confirms that she wants to get the selected amount of money.15. ATM checks the physically available money.16. ATM checks requests customers balance data from the database.17. ATM requests the database to debit the customers account.18. ATM returns the users card.19. User picks up the card.20. ATM provides cash.21. User picks up the cash.22. ATM asks the user whether she wants a receipt.Create a semantic data model for the above scenarioPayment Processing SystemTicket Issue SystemUserInterface SystemWhat is the impact if when the customer pays cash, he is allowed not to have the exact amount?In much(prenominal) case there would be a problem as to how the customer would be returned his remaining amount. Thus such cases should also be considered in conniving the system.