Assignment task:
When a customer approaches the counter at CQ Car Rental, a serviceperson asks the customer for the details of the desired car. She then checks in a computerized database to see if a car with these features is available. If a car is available, the serviceperson collects pertinent information from the customer (including an imprint of the customer's credit card) fills out a contract, and has the customer sign the contract. The customer is then given a key and is told where to find the car in the parking lot. The serviceperson indicates in the database that the car is no longer available. If a car with the desired specifications is not available, the serviceperson offers another, available car. The customer either rents it or refuses to rent it. When the car is returned, the customer pays by check or by charging the credit card, and returns the keys. The serviceperson gives the customer a copy of the signed contract, indicates in the database that the car is now available, and records its new mileage. The current information system which handles the above rental procedures was developed six years ago and, hence, is fairly outdated. Also, this system does not support customers to inquire the car availability and to book the model they prefer online, because the system does not run on the Web platform. The CEO (John) has appointed you to be the project manager to lead a systems development project, with a view to developing and implementing a Web-based system to replace the current system. John has specifically mentioned that the new system must allow customers to inquire car availability and to book their desired models online. Note that, in terms of system functionality, the new system is fairly similar to the existing system, except with the incorporation of the online checking and booking functions. In other words, the functions to be incorporated in the new system are fairly well known.
Assuming that the waterfall model has been chosen for implementing the new system. Also assuming that, at the current stage of development, some programs have been written and are ready, whereas some other programs are not yet ready.
In view of the business operations of CQ Car Rental, which system installation option should be used? Why?