Coursework - A system for Kandy Channeling
Scenario
The Kandy Channeling is a leading medical channeling Center in Kandy city. They provide channeling and consultation services to patients with various ailments. The Centre has a set of specialized medical consultants to provide the channeling and consultancy services. All the consultants of the Center are working on part time basis. The patients can make the appointments to the doctors by malting a phone call to the reception, email or by visiting the Centre. The patients must pay the fee and get their bill before they meet the doctor. The Centre needs to record and keep the following details.
• The consultants details including their available dates and times.
• The patient's detail.
• The consultant - patient appointment details.
• The billing details.
Currently all the records are stored manually in paper based systems. However since the number of patients being channeled has been increased, the management has decided to have a software based system to give a better service to the patients. Most importantly the system must have the facility to produce "on demand "reports to management for efficient and effective decision making.
Provide a well-designed, user friendly system addressing the following features:
• System should have differential access rights to the system users.
• Interactive user friendly interfaces
• Clear implementation of the business flow via the system.
• Design and implement suitable sets of reports, which you think will add more value to the entire business.
• Use test driven development and include test classes to test your application
Students are free to make necessary assumption on system design & granting access permissions other than mentioned within the scenario, but all suggestions must be well explained with the valid reasons.
Use Harvard referencing to proper acknowledge all the external sources you use.
Tasks
a) Provide the UML diagrams for the given problem with clear explanations on the design decisions. Derive detailed Use Case diagram, Class diagram & a sequence diagram. Whenever necessary document the relevant assumptions you made.
b) Provide an alternative OO design for the same problem
c) There are many system design patterns available in system development. Critically evaluate singleton, factory and abstract factory design patterns and apply the most suitable design pattern for your system development.
d) Develop an interactive set of interfaces to get the necessary user inputs. Make sure to implement proper validation mechanisms in order to restrict invalid entries to the system. Come up with suitable set of reports, which you will think add more value to your system
i. Your program must have a clear, three-tiered organization. That is the program should have distinct and separate data access, business logic, and user interface layers.
ii. Your program should make use of a proper database to store information
e) Document the test plan and explain how used test driven development in this scenario. This includes test rationale, test plan, test data and proper application of the test plan.
f) Create user and technical documentation for the developed solution.
g) Critically evaluate die work undertaken by yourself, in relation to the solution you developed. You can emphasize on the design you selected in implementing your solution. Provide justifications why you think one design is better than the other, among the two designs (task a, task b) you proposed for the above scenario. You can use your knowledge on OOP concepts, design patterns &, business domain specific knowledge to support your answer.