Student Number ANONYMOUSLY MARKED (Please do not write your name on this exam paper) |__|__|__|__|__|__|__|__|__| CONFIDENTIAL EXAM PAPER Computer Science TRIAL EXAMINATION Semester 1 - Trial, 2020 COMP9110 System Analysis and Modelling EXAM WRITING TIME: 50 minutes READING TIME: 10 minutes EXAM CONDITIONS: This is an OPEN book examination MATERIALS PERMITTED: (Lecture material, textbook, and calculator) MATERIALS TO BE SUPPLIED TO STUDENTS: None INSTRUCTIONS TO STUDENTS: 1. 2. 3. on the question paper. Or take photo of your answers on any papers and save as .jpg image format. 4. Save all files as .pdf format or .jpg image format. Zip them into a single .zip file and upload to the Trial Exam of COMP9110 Canvas site before the 9pm on 29th May 2020 (Sydney time). Please tick the box to confirm that your examination paper is complete. This exam contains three (3) QUESTIONS. All questions must be answered. Marks total 100. Write or type your answers for all THREE questions in the spaces provided For Examiner Use Only Mark Q 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Total ________ 

Read the following narrative, and develop some fragments of analysis documents as directed on the following pages. There may be places where the narrative leaves some ambiguity about aspects of the model; when this occurs, you need to clearly identify a question you would ask the stakeholders to resolve the issue, and then state which answer you have chosen to incorporate into your models. Campus Odd-Jobs (COJ) COJ provides a service which helps put students in touch with clients who want temporary workers to do odd jobs, like filing papers, cleaning floors, etc. A client can appoint COJ as its agent, by signing an agreement and providing details of themselves, such as name, address, phone number, bank account. A client who has signed the agency agreement can register some jobs as needing to be done; for each job, the client will fill in a form with information (eg. description, start date/time, end date/time, pay rate per hour, number of workers wanted, whether the worker must have residency, etc) and hand it to COJ staff who enter it into the system. Any student can consult the COJ system, to find out about jobs that have not yet been filled. They can search for jobs with particular characteristics, for example, restricting their viewing to jobs on a given day. They are shown a list of jobs that meet their criteria and have not yet been completely filled (ie the number of workers hired is less than the number needed); they can then view the details (including the client’s phone number) for some or all of these, or they can narrow their search by posing extra conditions. If they wish to apply for a job, they need to sign up as a worker, unless they did so already. A student signs up as worker by providing name, address, residency status. A worker applies for a job by contacting the client directly. Once the client accepts a worker for a job, they notify COJ staff, giving job details and worker details. If there are not enough workers accepted to fill the job by the day before the job starts, all the workers who were accepted must be notified that the job is cancelled. The client can also choose to ask COJ to inspect the work on a job; if they want this, a COJ staff member will visit the workplace during the job, and file a report on the quality of the work; if it is inadequate, the client is told and they will reduce the workers’ pay by 25%. Clients pay the workers directly for the jobs. At the end of any month, each client is sent an invoice, showing the total cost of jobs they listed that were filled, and those that were not filled. The client must pay COJ a fee which is 10% of the salary paid on filled jobs that were inspected, 5% on filled jobs that were not inspected, and 1% of the possible salary on unfilled jobs. The client is sent the invoice, and charged by direct debit from their bank account. 

ID: 12 Importance Level: High Q1 One use-case is “search for suitable job“. We show the normal flow; you must fill in two alternate flow in this use-case. Use Case Name: Search for suitable job Primary Actor: Student Stakeholders and Interests: 1. Student – wants to know about jobs that are unfilled and suitable 2. Client – wants to provide information about their jobs to potential workers 3. University admin – want to improve the quality of life for students, by giving them chances to earn income Brief Description: Student provides some characteristics to indicate what they want in a job, and they search for the unfilled jobs that match these characteristics. Trigger: Student decides to search for suitable jobs Type: External Normal Flow of Events 1. Student requests a search 2. System offers a set of possible characteristics on which to search 3. Student indicates some characteristics, and gives acceptable values for these characteristics 4. System provides a list of jobs that match the characteristics and are unfilled 5. Student selects some jobs to see more detail 6. System shows detail of selected jobs Alternate flows: 

Q2. Draw a UML class diagram outline for the data model of the domain described in the narrative. You should show (at least) class names, attributes, association names, and multiplicities on the associations. 

Q3 Draw a sequence diagram that represents both the normal and alternate flows from the use-case of Q1.