System development

Description

Question 1

An investment firm wants an asset trading system that will engage investors and brokers online to trade by accessing the stock market. The system must have the below requirements:

An investor through a graphical interface with an account can access the services of a broker. The investor needs to first have portfolio with an asset or assets. The broker then trades with the investor and accesses a list of databases and stock markets.

NB: Attributes should be determined by the student and modelling tools are required.

A software company has been contacted to help design and build the system.

(a) As the software project manager at the contracted software company, provide a formalized investment system’s Object Model and an instance diagram of the model with the following:

· An investor can only engage a broker at a time

· A stock market should be accessible by the investor and the broker via the trading asset system

· An investor can have many portfolios and assets

· The asset trading system should be accessible via a GUI and APIs for external users.

Draw a System Object Model for the situation above and explain the Object Model drawn. Justify why the object model can assist the analysis/design process of the system

(b) Provide a Use Case diagram for the Object Model question (a) above. Explain the Use Case and justify why Use Cases can be used to document system requirements.

(c) Provide a Sequence diagram, performed on a per Use Case basis for question (b) and examine the flow of method calls within the system.

(d) Provide a class diagram for the object model in (a) show the relation and association between the classes. Discuss 2 advantages of using class diagrams to document software with justifications as an OO CASE tool. [10 marks]

(e) Provide an object UML diagram based on the above UML class in (d) and explain the diagram. Explain using this example why UML is a good OO CASE tool for this example.

NB: A plagiarized work will be rejected and forwarded to academic dishonesty committee.

NB: Support your justification with relevant literature with articles indexed in high reputable places such as Scopus. Use journal articles such as Journals in IEEE Xplore, ACM digital library, Association for Information Systems (AIS) eLibrary, IET library, Engineering Index of Elsevier, BCS computer Journals etc. At least 70% of the justifications should come from scientific publications.

Question 2

An automated publishing system is to be developed to support publishing of books and further making it available in libraries. The publishing service has a procedure or activities that has to be followed to ensure publication is complete. The publishing service involves the Author, the reviewer, the editor, the typesetter and the printer. The activities involved are detailed below

An author writes the book chapter by chapter. The Chapter is submitted to the editorial office where the editor checks the content and forwards it to the appropriate reviewers for reviews. Each chapter is sent out to three subject expert reviewers to review the work. The Reviewers complete their task and provide review report on the chapters. The editor then writes an editorial feedback on the status of the chapters and the author provide a revised version of the chapter.

If the reviewer is satisfied with the work of the author, the editorial office then sends the work to the typesetters to work on the book and makes a draft copy available to the author for proofreading. The Final draft and inputs are sent to the editorial office for validation and author feedback. When the editorial office is Ok with the final draft, the book is sent for reset at the typesetting office and the book is forwarded to printing service for production.

(a) Provide an activity diagram, showing activities of the book production. Critically discuss the role of UML diagrams in modelling and design of information systems with focus on requirements capturing.

The final book from the above with its attributes such as title, author details on the book and book details are catalogued in the department of information system’s library. Copies of the books are made available for borrowing or reservation at the departmental library’s patrons office. These services can be accessed by faculties and students of the department. The departmental library clerk is responsible for the stocking, check-in and check-out services of the library books. The Departmental library manager has a super role over the clerk and the patron.

(b) Provide a use case diagram for the scenario above showing cases of inheritance and relationships. List the use case specifications and explain them. Critically discuss the significance of Object-Oriented Analysis and Design of requirements.

(c) Provide a sequence diagram for the library process and explain the flow of method calls within the system.

(d) Provide a class diagram based and explain it. Discuss the essence of using class diagrams and provide relevant justifications

(e) Critically discuss 2 advantages that CASE offer for systems development process models.

NB: Appropriate referencing of works is highly required. A plagiarized work will be rejected and forwarded to academic dishonesty committee.

NB: Support your justification with relevant literature with articles indexed in high reputable places such as Scopus. Use journal articles such as Journals in IEEE Xplore, ACM digital library, Association for Information Systems (AIS) eLibrary, IET library, Engineering Index of Elsevier, BCS computer Journals etc. At least 70% of the justifications should come from scientific publications.