Question 1 (21 marks) Imagine that you are a system accountant in The Sai Sha Coastal Hotel. The senior management of this hotel would like to spend HK$1.5 million to (1) computerize its accounting and payroll system and (2) replace its legacy systems, including the hotel reservation system and three different sets of point-of-sales (POS) systems, which are being used among the restaurants, the cake shop and the gift shop. One day, you met the CEO of the hotel and he expressed that he personally prefers using a new integrated system as this is a trend in the business world. Later on, the hotel invited some system developers to prepare a system proposal on the new integrated system. During the reviewing process, one of the proposals mentioned that its integrated system could be able to provide a hybrid data processing mode, which allows the system administrators to switch the data processing approach from online real-time mode to batch mode, or vice versa. Required: a) Suggest any THREE advantages of using an integrated business system rather than separate business systems. (6 marks) b) Illustrate how the hybrid data processing mode could maintain system availability of the following sub-systems when there is an unexpected internal network failure: i) the accounting sub-system; and ii) the POS sub-system in the gift shop. (3 marks each, total 6 marks) c) Explain why batch data processing approach should NOT be adopted and used in hotel room reservations. (4 marks) d) Discuss why key decisions of this system development project should be discussed and made by the information systems steering committee instead of the CEO or the IT director? (6 marks)