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Design And Development Of Object Orientated Systems Using Java | Java Assignment Help

Knowledge & Understanding:

  1. Demonstrate in-depth knowledge and understanding of current best practice in the design and development of Object Orientated systems

Intellectual / Professional skills & abilities:

  1. Design a system using advanced object orientated principles and methods, such as Behavioural, Creational and Structural design patterns, ensuring a high level of quality and data security.

  2. Implement and test Object Orientated programmes using advanced techniques ensuring a high level of quality and data security.

  3. Critically evaluate the effectiveness of implemented Object Orientated applications

Personal Values Attributes (Global / Cultural awareness, Ethics, Curiosity) (PVA):

  1. Demonstrate a professional understanding of the importance of software quality in the development of applications.

Assessment Criteria/Mark Scheme:

See Appendix A for assessment criteria. Note that this work is worth 100% of the module and that the marks total 100 marks.

Nature of the submission required:

Individual work: The individual report should be a single document, and it must be in PDF format.

Referencing Style:

Where you have used words from someone else (quotations), they should be correctly quoted and referenced in accordance to the Northumbria Harvard System. You will be required to submit the report for the work via turn it in.

Cite them Right can be found here

Fair use of code from the internet:

You are not permitted to use templates from the internet; any group which uses a template to create the architectural foundation of their work will be formally investigated for academic misconduct, all the work must be your own.

Small amounts of code can be taken and modified from the internet however all occurrences must be clearly indicated in the comments section at the top of each class. You must including in the comments section a reference to the original source. Methods and properties should also be marked as “copied from: URL” or “biased on: URL” if they have originated from an external source.

Reflective writing:

Tasks 5 and 6 are reflective writings; although many of you are aware of what reflective writing is. Past evidence indicates that some students do not understand what is required. It is not about ‘book work’ where your answer is basing on external sources, although you should use some academic papers to support your arguments. These questions are about what you and your group have done and what you have learned from the process. You are required to indentify positives and weaknesses in the group work. Use the theory covered in the module to effectively aid you in this reflective evaluation of your work. The reflective commentary should be critical; you should identify what when wrong and demonstrate you have learned from the process.

Assessment Scenario

Case Study: Quick Fix Dental Practice

Technology requirements

Application must be built using Visual Studio 2019 or Visual Studio 2017, professional or enterprise. The community edition is not suitable for this work, as it will not work with Entity Framework.

You must use the database built into visual studio as your data store, you should not use any other database.

The GUI must be built using windows forms (winForms). ASP or other presentational technologies are not permitted.

Patterns must be present in the technical solution, for example the presentational layer should use MVP. You are also required to use Entity Framework and LINQ.


Radiant Smile Dental practice requires you to build a windows application to support dental practice. The dental practice only deals with NHS patients however it does offer a number of treatments not covered by the standard NHS services such: teeth whiting, dental implants.


When a patient is registered their details such as date of birth, name, address, email are captured and stored by the system. A medical questionnaire is given during the registration process. The questionnaire captures information regarding any medical conditions which may affect the treatment and any allergies the patient may have such as to latex or antibiotics.

When a patient visits the dental surgery a check is done to see when they last updated their medical history. If this was more than a year ago the system will prompt the reception staff to ask if they has been any changes to their medical history. If there has they will be required to fill in a new medical questionnaire.

All patients must provide the name and address of their GP practice. It is likely that many of the patients in the dental practice will be register to a small number of local GP practices.

NHS patients may be entitled to free treatment or they may pay a fixed free given the dental work undertaken. More detailed information can be found at

All treatments private / NHS should be easily maintained by the practice staff. This may be the change of pricing in line with changes to the NHS fees. It could also include new private services or accommodate a change in price due to a special offer.

Checkups (15 minute appointment)

Checkups can be booked in one of three ways

● When a patient comes to the end of a treatment plan of has had a check-up which requires no work they are offered an opportunity to book a six month check-up.

● When they first register with the practice.

● If they telephone in and ask for a check-up, a check is made to make sure they have not already had a check up within the last four months.

In the case of new patient or coming to the end of the treatment plan, the system must prompt the reception staff to ask the patient to make an appointment.

The system should identify any patients who have not visited the dental practice in the past six months and have no future appointments books. The system will produce a reminder letter which will be mailed out to the patient asking them to make an appointment. They will be contacted again is six months if they have not made an appointment and has not visited the dental practice.

Any patient who has not made contact with the dental practice for a two year period will be removed from the list of active patients.

Emergency Appointments

A practice holds 2 hours non advance appointments each day; these are for dental emergencies and are allocated on a first come first served basis.

Recording a treatment plan

A person will have 32 adult teeth, and when they are younger 20 baby teeth. During someone’s life the state of the teeth may change: all the way from a filling to an extraction.

The system should only record information only about a ‘treatment plan’ the work identified as needing to be carried out following an examination.

The dentist will fill out a visual representation on a pre-printed view of the teeth so that the patient is aware of what is going to be done. This visual representation is not recorded by the system instead the dentist makes professional medical notes. These medical notes will be short multi line text documents which are written in such as way that any trained dentist will understand.

Treatment plan consent and payments

Many NHS patients will pay a fixed free for the detail service which is split into three bands. Some patients are entitled to free treatment, depending on their individual circumstances. In both cases the patient signed a standard NHS form consent/treatment form, these are scanned and a copy is held on the system.

In the event of an emergency appointment this may be done immediately after the treatment is carried out.

Appointment Reminders

The practice has suffered from many missed appointments, patients forget about appointments which are often set weeks or months in advance. In order to try and solve this problem SMS text message is sent to the patient five working days before the appointment, and another is send the day prior to the appointment.

It is also policy to phone parents who have long appointments. Some dental work may require 40 or more minutes to complete. Patients who have long appointments are contacted by phoned by a member of the reception team to double check that they will be attending. This normally takes place two working days before the appointment.

A third party service is used to contact patients via SMS text messages. The system should provide the following text document which will be sent to the service. The text document contains a list of the reminders to the sent that day; it has the mobile phone number and the day/time of the appointment. This should be in the form of a comer delimited file.

The system will also produce the list of phone numbers, names and appointment details for all those who have a long appointment in three working days time. This will be processed by the reception staff during quiet periods. Reception staff should be able to mark those who have been successfully contacted, those who have not been contacted by the end of the day will appear on the following day’s list. No further attempts will be made if they are not contacted on the second consecutive day.

The practice operates a policy deregistering anyone who has missed three appointments within a rolling five year period, this will only happen when their current treatment plan has ended. There are exceptions such as any patient who has a memory problem or if anyone has missed an appointment due to illness or bereavement, even events such as a traffic is seen as an acceptable reason for missing an appointment. A clarification for any missed appointment will be sort on the next interaction with the reception staff. Your system must prompt the staff to ask and then record if it allowable or not. In the event of a non-allowable reason the system must check if there has been two more within the past three years. If so, the patients’ record will be marked as one to deregister. If not them a record is made of the missed appointment.


Staff have the ability to request flexible working so it is possible that some staff may work less than five days a week. Or that they only work the hours between 10am and 2pm. The practice diary which contains all the staff and appointments is held six months in advance.

Staff can also request holiday. It is normal that there will be appointments which have already been made for the period of the holiday. In these cases reception staff will be able to identify and contact the patients so that they can rearrange the appointment.

Staff sickness. Staff may become ill and be unable to work for a period of time. If a member of staff becomes ill then it may be possible to move some of the appointments for a day to other dentists and also use half of the allocation of emergency appointments.

The system should be able to identify from the treatment plan and type of appointment which patients should be dealt with as soon as possible and which can be moved a new appointment in the future. Patients undergoing root canal work or crows are priorities and an attempt is made to fit them into current weeks work, checkups are seen as lest priority and are rescheduled last. Contact information is listed for all the affected patients. The receptionist calls each one in the list which has been prioritised. They explain the situation and work with the patient to choose an alternative day and time.

Task 1 Research Question (Individual Work) 30 marks

This task is an individual task and covers the following learning outcome.

  1. Demonstrate in depth knowledge and understanding of current best practice in the design and development of Object Orientated systems

Question for section one and two

“Most systems require user authentication, identify the technical approach you would use to storing the password information so that a user was able to authenticate themselves at a later date. You discuss a range of approaches and any weaknesses with the indentified approaches.”

The research is split into three sections,

Section one

The initial part you will be limited in your usage to a single source of information, namely “stack overflow”. This initial investigation should take approximately 1 hour to complete. And will be undertaken during the lab session. See Appendix B for information regarding how to capture the information. If you miss the lab you can still do the exercise and forward the information to the module tutor for analysis.

(5 marks)

Section two

This second part answers the same question however it should be only done after the lecture on security. You must document the work in the same way as you did for section one, using the layout from Appendix B. Part one documented finding information on stack overflow in this section. You also need to write a short summary identifying the technical measures you would take and give a reference to any code examples which you would use as a basis for implementing the solution.

(5 marks)

Word Limit 300

Section three

Identify possible technical solutions to security protecting information in the properties of a class prior to it being persisted on a database. Additionally you should consider and outline any implications any of the possible solutions may have on the winder functionality or performance the application.

(20 marks)

Word Limit 1500

References from good-quality, relevant literature must be used in order to strengthen any points that you raise in your discussion. This only relates to sections two and three of this question.

Task 5 Evaluation of the development process (Individual Work) 15 marks

In this task the following learning outcome is assessed.

  1. Critically evaluate the effectiveness of implemented Object Orientated applications

  2. Demonstrate a professional understanding of the importance of software quality in the development of applications.

Many iterative methodologies incorporate an evaluation step at the end of each development time-box. The purpose is to reflectively evaluate the development increment so that lessons can be learned, and improve the development process in future increments. In this section you are required to critically evaluate development process and the tools used.

● Critically evaluate the approach your team used in selecting what requirements in implement in the development time box, you should consider the logical grouping of the functionality and if you choose to many or two few requirements to implement.

● Teamwork, you need to critically evaluative how you’re team worked together in producing the technical solution. How you self organised yourselves. If any problems occurred they should be listed as well as any attempt to reach a resolution.

● Tool evaluation: Critically Evaluate: the development environment, database chosen and the use of testing tools in the development of the system.

Task 6 Evaluation of the technical solution (Individual Work) 15 marks

In this task the following learning outcome is assessed.

  1. Critically evaluate the effectiveness of implemented Object Orientated applications

Critically evaluate the Design and Implementation in relation to the object orientated principles covered in the module. You must consider the patterns you have used and discuss if they were effective and also identify any patterns you have not implemented but believe to be relevant.

Discuss the choice of Data Access implementation. Was Entity Framework directly used or did you impose your own unit of work and repository patterns. You need to justify and reflect on the choice you made.

Critically evaluate your application in terms of security. You do not need to discuss password security which you covered in the research question. However you should focus on the security needs of the application from the data perspective. You should use what you discovered from task one section three in order to give some specific recommendation related to this application.

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