Assessment
Assessment item 2—Assignment 2
Due date 11:45pm on Sunday, 24Nov.2024
Weighting 35%
Length Not applicable
Objectives
This assessment item relates to the unit learning outcomes numbers 1, 2 and 3 as stated in the unit profile.
Part A. Database implementation using MS Access (35 Marks)
Introduction
This is the supplementary assessment, which we provide a case study in Appendix (1) and its sample solution of ER modeling in Appendix (2). You must use that sample solution as in Appendix (2) for the following tasks:
(Note: this is similar to your Assignment 2 tasks in T2 2024. After you have completed the tasks, email me your solution in a zip file.)
Assessment task
1 Normalization
a) Map the ERD, from the sample solution, into a set of relations in at least Third Normal Form (3NF). You must ensure that your relations meet 3NF. There is no need to show your working.
b) Select any two of your relations from the previous step, 1a), and perform the following for each of those two relations:
• List all the functional dependencies exist in the relation.
• Demonstrate that the relation meets Third Normal Form (3NF).
For your help, an example for a Student relation’s 3NF justification has been provided below:
STUDENT (StudentID, Name, Address, DateOfBirth)
i. The primary key is StudentID which identifies a student. There will be one student name per Student ID because only one name is recorded for each student. Even though a student may have multiple addresses (e.g. a home address and a work address), the case study states that there is a need to record the home address only and hence there will be only one address for each student. There will be only one date of birth for each student. Thus, there are no repeating groups. Hence, this relation is in 1NF.
ii. The primary key is StudentID. This is the only candidate key since Name is not guaranteed to be unique (two different students may have the same name). Address is also not guaranteed to be unique. This means that Student ID functionally determines every other attribute in the table. There is a single valued simple candidate key (StudentId) and therefore no partial dependencies are possible. Hence, the relation is in 2NF.
iii. Name cannot be used to functionally determine any other attribute in the table since two different students may have the same name; likewise for address and date of birth. Therefore there are no transitive dependencies in the table. Therefore it meets the requirements of first, second and third normal form.
2 Relational database implementation
Note: Use the relations that you created in the above step 1- Normalization to create a database. The recommended tool for this work is Microsoft Access, version 2010 or later. One reason for recommending Microsoft Access is that your unit lecturer/tutor will be able to provide adequate support to you in the use of this tool. The remainder of this document in Part A assumes that you are using MS-Access.
In implementing the ER model provided, you must complete the following tasks:
• Create all the relations in a Microsoft Access database. Consider each attribute in every table and make appropriate choices regarding data types & sizes, indexes, required/not required and validation rules. Your choices should be appropriate for each attribute and should support data integrity. (Note: see the Data Integrity section below for specific data integrity requirements)
• Create relationships as appropriate. Enforce referential integrity for all appropriate relationships in the database. Apply cascade update and/or delete options wherever necessary.
• Review the default index created by Access for each table. You should ensure that the indexes follow the guidelines given in the unit textbook.
• Populate the database with sample data of your own. You must include sufficient sample data to test your queries and report. Please note that the expected result of query questions may depend on the actual sample data populated.
Data integrity
You are required to implement integrity constraints within the database to enforce the following requirements:
• For the test table, the result of test only can take the value either ‘positive’ or ‘negative’.
• For the hospital table, the number of respiratory machines must be in the range between 0 and 1000.
• The treatment description in the treatment table should not be blank.
• For the test table, the primary key testID must be consisted of a letter ‘T’ (or ‘t’) and following three digits.

Information requests
Create queries to answer the following information requests. Note: Do not use the Access query builder (QBE) to create your queries – you should type the queries manually using SQL view/editor.
The marking process of the queries for information requests may also consider the effectiveness of your SQL statements that have been used in the queries. It is important that your SQL statement must reflect the correct business logic & SQL syntax. (Note: Use enough sample data so that the output is produced by each and every query).
Question 1. List the full names, phones, and ages for these patients whose home addresses are either in Brisbane or Gold Coast, and their ages are greater than 60 years old. Order by their family names.
Question 2. There are many doctors in each hospital. But not every doctor participates in the treatment work due to their different specialties and other tasks. List the names and specialties of doctors, who are working at Princess Alexandra Hospital in Brisbane and have not participated in the treatment work of corona virus-infected patients.
Question 3. List details of the patients from Rockhampton and their closely contacted persons. These details include patient’s full names and phones, closely contacted person’s full names and phones, as well as the contact process or scenario descriptions.
Question 4. List the names, phones, and the number of virus tests for the patients who are from Brisbane.
Question 5. Which hospitals have the highest number of respiratory machines? Find out the names of the hospitals, their phones, and the number of respiratory machines.
Question 6. Which patients have been tested more than once on virus test? Show the patient names, phones, and the number of virus tests.
Report
Create a simple report object showing the details of patients under the treatments. The details should include the patient’s full names, treatment descriptions, responsible doctor names, and the hospital names. You need to provide appropriate heading and format the report properly.
Hints:
• Create a query that lists all details needed for a report. If you are unable to formulate this query, then create a report that is based directly on the table(s). [Note: you will not be able to obtain full marks for the report creation if you base your report directly on the table(s) and some criteria are not met in your reports.]
• Use the report wizard to generate a basic report based upon your query [or the table(s) if you were unable to formulate the query].
• Once the report wizard finishes, switch to design view and rename the labels appropriately; for example, change the label ‘StartDate’ to ‘Start Date’.
Implementation Report
You must also provide a short implementation report describing your experiences with this assignment. You may discuss any of the following:
1. Any two interesting things/procedures you learnt by doing this assignment.
2. Any one requirement of the assignment that was relatively difficult / complex to solve but successfully completed by you.
Use the implementation report to demonstrate that you have thought carefully about the issues that arise when implementing a relational database.
What you should submit
Microsoft Access databases file containing:
1. Tables with sample data
2. Relationships
3. Queries
4. Integrity constraints
5. Report (object).
A Microsoft Word document containing:
1. A set of relations mapped from E-R diagram (3NF)
2. Two relations with functional dependencies and demonstration of normalization
3. Implementation report
Your document should contain appropriate identification information (your student number, name, unit number, etc.) and should contain the relevant headings for each section.
Part B. Database implementation using MySQL Server (Optional)
Consider a simplified version E-R model on the treatment activity, where you only deal with three relations Patient, Treatment and Doctor (ignore all other relations) based on the E-R model provided for assignment 1 sample solution. Using MySQL Workbench 6.3 CE to create a database with the above three relations, include specifying the primary keys, foreign keys and drawing an E-R diagram. Alternatively, you can complete the above task by using My SQL 5.7 Command Line Client to create the database and corresponding tables with sample data populated.
Due to COVID19, the face-to-face demonstration of creating database schema from students by using MySQL becomes unviable. Therefore, Part B is not required to implement. You don’t need to submit a separate file on this part. In Week 11 or 12 tutorial session, your local tutor will show you the basic skills on how to create a database using MySQL Workbench.
Important points
• You must work individually on this assignment.
• The model solution to this assignment will be released approximately two (2) weeks after the due date.
• Assignments that are submitted after the release of the model solution will receive zero marks.
• You must state in your word document the details of all materials and sources that you used to complete this assignment. This may be as simple as 'This assignment was completed using only the COIT 20247 unit materials'.
• Extension requests (by filling in an online form) should be submitted before the assignment due date.
• Before submitting your assignment, review the marking criteria provided on the last page of this document. Ensure that all the criteria are addressed in your submission.
• Penalties related to late submission and plagiarism will be applied as per University policy.

Assessment criteria
COIT20247 Assignment 2 Marking Sheet
1 Relational database implementation (16 marks) Available marks
Set of relations correctly mapped from ERD 5.5
Functional dependencies correctly listed for two of the relations 2
Normalization correctly listed for two of the relations 2
Relationships set up correctly, referential integrity enforced, appropriate use of cascade update/delete 2
Data types & sizes selected appropriately 2
Indexes – Indexes are appropriate 1
Populated sufficient sample data 1.5
2 Data integrity (2 marks)
Data integrity correctly implemented 2
3 Queries (12 marks)
Query 1 2
Query 2 2
Query 3 2
Query 4 2
Query 5 2
Query 6 2
4 Report (4 marks)
Underlying query/queries has/have been created and are correct 2.5
Report layout and heading are appropriate 1.5
5 Implementation report (1 marks)
Implementation report discusses appropriate issues 1

Sub-total before any possible deductions 35
Late penalty (enter as the number of days late)
Plagiarism penalty (enter the negative marks)
Assignment 2 total /35
Appendix (1) - Case study
Case Study: A database system for managing COVID19 patient cases
Due to the coronavirus pandemic, a state government health agency urgently needs to build a database to record relevant data. The management of the health agency has approached you to build a relational database that will be used as the most critical backend software component in their application system so that the relevant business data will be recorded appropriately and further information queries will be processed efficiently. The proposed database system requires efficiently to record and track all patients, doctors, hospitals, and relevant information on diagnosis, treatments, and virus tests, etc. Consider the following user requirements carefully and design a database conceptual schema (i.e. E-R model) to support such an application.
A patient refers to a person who has been infected in fact by the coronavirus. The symptoms of the patient could appear in mild condition or serious condition. Therefore, the patients can be roughly categorized into two types – mild condition patients who can stay home for a self-isolation process, and serious condition patients who need treatments in a hospital. The patient’s full name, gender, residential address, birth date, and contact phone must be correctly recorded. When a patient comes to a fever clinic of a hospital, firstly the patient is diagnosed by doctors. Then depending on the diagnosis outcome and symptoms, the patient either is suggested to return home for isolation or is arranged to be treated in the hospital. Even for home isolation, the case of the patient is still being managed by the hospital. The patient can contact the hospital at any time for a further check or assistance if the patient feels necessary or condition changed. A patient generally undergoes several times test of viruses. Each time the virus test must be recorded with the testID, time & date, method, result (positive or negative), the technician name, and the name of the testing site. The developing database system will record relevant information on diagnosis and treatment processes. The database system also stores the details of each doctor including their names, birth dates, genders, phones, specialistic areas, as well as their supervisor names. Besides, information on each hospital in this state is essential in this database system. This should include the hospital name, address, contact phone, the name of the managing director, and the number of available respiratory machines.
As the infection of coronavirus is a type of epidemic disease, it is extremely important for the health agency to carry out epidemiological investigations by tracing the people who have contacted the confirmed patients on occasions such as shopping centres, worksites, home or a passenger cabin in an airplane. Therefore, the details of the closely contacted persons are required to record in the database system. Additionally, a patient’s personal health history is required to record in the system, as it helps diagnosis and treatments.
The specification of above application scenario may be not presented explicitly with every detail on the attributes, the entities or relationships in the required E-R model, because one of your tasks for this assignment is to analyze the requirement of users, identify necessary entities and relationships, and build the E-R data model for the case study. You may need to do some research on the data and possible model in general health management with complete attributes, and make some assumptions, which should make sense for such an application scenario.
Appendix (2) – Solution of Case study ER modeling