Information Systems Development Assignment - Object-Oriented Analysis Case Study
Objective - To apply object-oriented methodology for analysis of information systems development in a case study.
Case Study - Chemist Service Group
Chemist Service group is a chain of chemist stores. It employs more than 8,000 staff members distributed over 500 retail stores nationally and been growing at a rapid rate.
Chemist Service stores are selling health products in stores and online, and preparing medication prescribed for patients as well. Therefore, the business deals with two types of customers: the customers who purchase products either in local stores or online, and another type is the patients who need prescribed medications either occasionally or regularly. Those patients can only make purchase in a local store.
Each store is made up of two divisions as follows:
1. Serving patients by preparing medications; giving pharmacological information to multidisciplinary health care team; monitoring patient drug therapies. Those service staff are professional pharmacists.
2. Selling health products of different brands procured from different suppliers.
Web users create an account, which stores their contact details and their nominated username and password for return visits. User login or account creation is required prior to mark orders.
The online product orders are either arranged for local pick-up or delivered via courier at an additional fee. Customers can make their payment by cash, cheque and credit cards in local stores. However, online purchases must be paid by credit cards for delivery.
The management wants to add more features to its existing web site. The web site provides not only the online ordering facilities utilising a typical shopping cart and checkout model, but also more sectors such as promotions, introduction of new products, and the news of classified products such as Baby, Beauty, Home Health, Health advice, and Wellness programs, etc. The membership registration sector should attract loyal customers by providing "Frequent buyers" program for awarding discount points and special offers.
Each store has a local operational database to capture their day-to-day business processes such as POS transactions and backend inventory database.
The managers check their local inventory database to see the balance of products daily and observe the hot selling products. The managers need to order the products from the central warehouse, receiving delivered products and updating the inventory database. Each order is associated with an order date, requested ship date, product quantity, sales rep, and a deal, etc. A deal is an agreement between Chemist Service group and supplier for their goods related discount during a fixed period.
The management needs to analyse the sales from different types of products for data analysis, forecasting demand, procurement and order decisions. They also need data for their expansion plan. The managers need to analysis customer behaviours and location performance for better planning and promotion decisions.
Chemist Service group needs to have an integrated information system to help their management for business intelligence. They see the need to increase their capacity and generally improve their existing system. You are employed as a business analyst to provide a system analysis model.
Tasks -
You need to analyse (as a preliminary to designing) the business system for Chemist Service Group using the OO approach. You tasks encompass the following steps.
I. Requirements Gathering
1. Create an owner's view for the system that you can show to stakeholders for feedback. You can make any reasonable assumptions if any details that you think are important are not clearly mentioned in the case description. You can derive the case reasonably.
2. Identify the users of the system. List these under subheadings for business and IS users.
II. Domain Analysis
3. Write domain definitions and, from there, proceed to establish the domain scope for the system and each subsystem.
4. Identify the domain concepts from the domain definition and scopes. Categorise the concepts into processes, functions, roles, objects, and business rules. You need to list them in a domain dictionary table using the attached template.
III. Behavioural Modelling
After completing the domain analysis, you are ready to start use case modelling. Please make sure that you use the domain concepts identified during the domain analysis activity as the basis for behavioural modelling.
5. Identify stakeholders of the whole system. List them with descriptions using the table template.
6. Create a use case summary for both the product sales and Inventory Management subsystems using the template table.
7. Complete a use case template for a use case that relates to a customer ordering for a product online. Use the blank template.
8. Create a use case diagram for the Product sale subsystem(s), complete with "include" and "extend" where appropriate.
9. Create an activity diagram for the Product sale subsystem(s).
IV. Structural and Dynamic Modelling
After completing the behavioural modelling, you will continue with structural and dynamic modelling.
10. Identify classes for both the product sales and Inventory Management subsystems. List each class, along with responsibilities and the use cases they are associated with, using the table templates.
11. Create a complete class diagram with associations and multiplicity information for the product sale subsystem. Questions: Is there any relationship in this case study that can be described by aggregation/composition? Are there classes that can be generalized/specialized?
Note: Answer the questions separately from the diagram.
12. Create a sequence diagram for the process of a customer selecting products and completing an online order on the Chemist Service website.
Attachment:- ISD Assignment File.rar