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52 2 Write a motivation to management in which you explain what your concerns are in using the formal methods model in the specification of your registration system. (6) Concerns are highlighted on page 92 (Pressman, 2005). You need to highlight that in a registration system costs are always an issue, and using a formal method may lead to more costs, which management may want to prevent. Also, you may argue that the university has no software developers and therefore needs either to appoint developers or to train existing staff. Thirdly, since the users of the registration system are not technically sophisticated, using formal models as a communication mechanism may be problematic. 3 Discuss how you can use adaptive software development in the software development of a registration system at the university. (10) Use the guidelines on pages 114–116 on adaptive software development and relate how the three phases – speculation, collaboration, and learning – will play a role during the development of a registration system using adaptive software development as a technique for building the system. The following is an example of a good answer sent to us by Leanne Buckus, which incorporates the registration system into the phases given for the Adaptive Software Development Model: 3. The 3 phases of the Adaptive Software Development (ASD) Model for the software development of a university’s registration system would be i) Speculation Phase – in this phase: The registration project would be initiated The mission statement of the customer is determined i.e. to register South African and foreign students both online and through a Contact Centre, using a simple, efficient and effective process The scope of the project would be established – inclusions and exclusions in the project The project constraints are established – delivery dates, – which campus, which users, which students Basic requirements are established – the high level registration requirements to determine the project iterations ii) Collaboration Phase – in this phase: Workshops and JAD sessions have to be arranged to determine the detailed requirements per cycle, develop a design to support the requirements Develop and deliver a solution per release cycle iii) Learning Phase – in this phase: As part of each cycle, focus groups must be scheduled to determined whether the release to be delivered meets the business requirements Formal technical reviews must be conducted on the software components to ensure that improvements in quality, design etc are learned and incorporated for future Postmortems must be done by the ASD teams to look at the own performance and process with the intention of learning and incorporating those lessons in future 4 What questions must be asked and answered in order to develop a realistic project plan for a university registration system? (7)
53 INF305F/ SWE401I/SED401I /101 The questions that must be asked and answered are given on page 138 of prescribed textbook. Relate each of the questions to the registration system. Why is the system being developed? In this activity the development team should assess the validity of business reasons for the changes. In the registration system, there should be a good reason for a new system that justifies the changes. For instance, a reason may be to improve slower hand-processes to be able to get a higher throughput of registrations. What will be done? For this question, it is necessary to identify the functionality to be built and, by implication, the tasks required to get the job done. If the goal is to create a new online registration system with electronic payment facilities, the development team will typically have to include tasks such as negotiation with financial institutions to accommodate the transactions, and identification of team members that will develop the interface for payment. Similarly the remaining questions must be answered and related to the registration system, including the following: - When will it be accomplished? - Who is responsible for a function? - Where they are organisationally located? - How will the job be done technically and managerially? - How much of each resource is needed? 5 What are the types of requirements in quality function deployment within a university registration system? (6) The requirements are discussed in detail on page 188 of the textbook. The requirements include normal requirements, expected requirements and exciting requirements. For each of the requirements it is necessary to relate the requirements to the registration system. For example, in normal requirements that reflect objectives and goals stated for a product or system during meetings with the customer, the customer (user of the registration system in this case) may comment on interfaces built by the team, test registration functions such as the electronic payment, and remark on how efficient a new registration is done.
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