Object-Oriented Analysis and Design (OOAD) Course
Our Object Oriented Analysis and Design course covers object-oriented concepts, the unified process, use case modelling, domain and class models, UML interaction, activity and state diagrams, GRASP principles and Gang of Four design patterns, and mapping designs to code. Lessons are live and one-to-one with a verified subject expert, who explains each concept with worked examples, solves problems from your own module and helps you prepare for exams and coursework. Suitable for computer science and engineering students, following university syllabi in the UK, US, Australia and India (including AKTU, VTU and Anna University style courses).
Reviewed by A. Shinde, Computer science and full-stack development specialistLast updated
$13 – $33
per hour
Free demo class · pay only if you continue
What you will learn
Learning outcomes
- Understand object-oriented analysis and design principles
- Analyze software requirements using object-oriented techniques
- Create use case models
- Design UML diagrams
- Develop class and object models
- Model relationships between objects
- Apply object-oriented design principles
- Understand common design patterns
- Transform requirements into software designs
- Design maintainable software systems
Prerequisites
- Basic programming
- Object-oriented programming
- Classes and objects
- Inheritance and polymorphism
- Basic software engineering concepts
Tags
Course structure
Syllabus(8 modules)
- Object-oriented programming languages
- Object-oriented model
- Analysis
- design and implementation
- Objects and classes
- Messages
What is Object-Oriented Analysis and Design?
In short: this course gives one-to-one online tutoring in object-oriented analysis and design. A verified tutor explains UML, use cases, class and sequence diagrams, design principles and patterns, with feedback on your own models.
Object-oriented analysis and design (OOAD) is a method for developing software by modelling a system as interacting objects, first analysing what the system must do and then designing how it will do it. It uses the Unified Modeling Language (UML) to describe requirements, structure and behaviour through diagrams such as use case, class, sequence, state and activity diagrams.
This online course teaches Object-Oriented Analysis and Design one to one with a verified tutor who has studied or taught it at university level, at your pace and aligned with your own module.
Related subject: Software engineering help.
What does the Object-Oriented Analysis and Design course cover?
| Topic | Key content |
|---|---|
| Introduction | Object-oriented model, OOA, OOD and implementation, objects, classes, messages |
| Unified methodology | UML views, OO design methodologies, the Rational Unified Process |
| Object-oriented analysis | Identifying objects, classes, associations, attributes and operations |
| OO concepts | Abstraction, ADTs, class hierarchies, modularity, inheritance, encapsulation, polymorphism |
| Class models | Class diagrams, associations, aggregation and composition, multiplicity |
| Use case models | Actors, system boundary, include and extend relationships |
| Design and interaction | Domain modelling, design approaches, sequence and collaboration diagrams |
| State and activity diagrams | State machines, activity diagrams, packages and subsystems |
Which UML diagram should you use?
| Question | Diagram |
|---|---|
| What can users do with the system? | Use case diagram |
| What classes exist and how are they related? | Class diagram |
| In what order do objects exchange messages? | Sequence diagram |
| How does an object change state over time? | State machine diagram |
| What is the flow of a process or workflow? | Activity diagram |
| How is the system organised into parts? | Package or component diagram |
How do you go from requirements to a class diagram?
- Write the requirements or use case descriptions.
- Underline nouns as candidate classes and attributes.
- Underline verbs as candidate operations and associations.
- Remove duplicates, vague terms and implementation details.
- Add associations with multiplicities, and aggregation or composition where parts belong to wholes.
- Refine with inheritance for genuine 'is-a' relationships.
What does a worked class diagram question look like?
Here is a short example: "A customer places orders; each order contains one or more products." Turning the nouns and relationships into a class model gives:
| Class | Key attributes | Relationship |
|---|---|---|
| Customer | name, email | 1 Customer places 0..* Orders |
| Order | orderDate, status | 1 Order contains 1..* OrderLines |
| OrderLine | quantity | Each OrderLine refers to 1 Product |
| Product | name, price | 1 Product appears in 0..* OrderLines |
Where do students lose marks in Object-Oriented Analysis and Design?
Students most often lose marks in Object-Oriented Analysis and Design through the habits below. Each is easy to fix with practice and feedback on your own answers.
| Mark-loser | What to do instead |
|---|---|
| Wrong multiplicities | Read each relationship from both directions |
| Too many or too few classes | Use nouns as candidates, then refine |
| Inheritance overused | Prefer composition unless it is a true is-a relationship |
| Sequence diagrams out of order | Follow the use case step by step |
| Patterns named but not applied | Show how the pattern solves the problem |
How is it assessed, and how can a tutor help?
OOAD modules are usually assessed by modelling coursework, such as a UML design for a case study, and a written exam on concepts and diagram construction.
Tutors explain concepts, work through practice problems with you and give feedback on your approach. Graded work you submit must be your own, as set out in our academic integrity policy. For deadline-driven guidance, see assignment help.
How the lessons work
Lessons are live and one to one on video with screen sharing and a shared whiteboard. You can follow a full course or book sessions on the topics you find hardest before exams. See also Software Engineering, Object-Oriented Programming and Software Project Management.
Object-oriented analysis and design project: who this course is for, prerequisites and study plan
An object-oriented analysis and design project takes a real problem from requirements to use cases, class diagrams and sequence diagrams, and this course teaches each step with a 1-to-1 tutor who reviews your UML as you build it.
This course suits third-year computer science and IT students taking an OOAD or UML module, and students working on a software design project.
Prerequisites: programming with classes and objects, inheritance and polymorphism, and basic software engineering concepts.
Course length: 40 one-hour lessons across 8 modules.
| Stage | Modules | What you can do afterwards |
|---|---|---|
| 1 | Object-oriented development, a unified methodology | Explain the Unified Process and its phases |
| 2 | Object-oriented analysis, concepts and examples | Find classes and responsibilities from requirements |
| 3 | Classes and class models, use case models in UML | Draw class diagrams and write use cases |
| 4 | Modelling, interaction, state and activity diagrams | Draw sequence, state and activity diagrams for a complete system |
Where it leads: OOAD builds on our Fundamentals of Object-Oriented Programming course and supports Software Engineering.
Object-Oriented Analysis and Design (OOAD) Course: frequently asked questions
What is OOAD?
A method of analysing and designing software as interacting objects, using UML.
What is UML?
The Unified Modeling Language, a standard set of diagrams for modelling software.
What is the difference between aggregation and composition?
In composition the part cannot exist without the whole; in aggregation it can.
What is the difference between include and extend in use cases?
Include is always part of the base use case; extend adds optional behaviour.
What is the Rational Unified Process?
An iterative software development process built around UML models.
Which tools are used for UML?
Tools such as StarUML, Visual Paradigm, draw.io or Enterprise Architect.
Can you help with my UML coursework?
Tutors give feedback on your diagrams; the work you submit must be your own.
Can you help me prepare for my OOAD exam?
Yes. Tutors practise diagram construction from case studies.
How much does an OOAD tutor cost?
The price depends on the tutor and session length. You see the hourly rate before booking, with no subscription.
Can a tutor do my assignment for me?
No. Tutors explain, guide and give feedback so you can complete your own work, in line with our academic integrity policy.
How do I find classes from requirements?
Identify key nouns as candidate classes, then remove duplicates and attributes.
What are SOLID principles?
Five design principles: single responsibility, open-closed, Liskov substitution, interface segregation and dependency inversion.
What is a sequence diagram?
A UML diagram showing how objects interact over time for a scenario.
What is a design pattern?
A reusable solution to a common design problem, such as Singleton or Observer.
What is multiplicity in UML?
The number of instances that can take part in a relationship, such as 1..*.
When should I use inheritance?
When there is a genuine is-a relationship and shared behaviour.
What is object-oriented analysis and design, with an example?
Object-oriented analysis and design models a system as interacting objects. For a library system, analysis identifies objects such as Member, Book and Loan and what users need to do. Design then defines their classes, attributes, methods and interactions in UML diagrams, such as a sequence diagram for borrowing a book, before coding starts.
What are the advantages of object-oriented analysis and design?
Object-oriented analysis and design models a system as interacting objects, which makes designs easier to understand, reuse and change. Encapsulation hides internal details, inheritance and polymorphism support reuse, and UML diagrams help teams agree on the design before coding. Exams often ask you to draw use case, class and sequence diagrams.
Do you offer lessons in my time zone?
Yes. Lessons are online, so you can book times that suit your time zone.
Which book is best for object-oriented analysis and design?
Two widely used books are Object-Oriented Analysis and Design with Applications by Grady Booch and others, and Applying UML and Patterns by Craig Larman. Larman is often preferred for its step-by-step case studies. Your tutor follows the book your module sets and adds exam-style UML questions.
What are good object-oriented analysis and design project ideas?
Good object-oriented analysis and design project ideas include a library management system, hospital appointment system, online shopping cart, hotel booking system and student course registration. Each has clear users, objects and workflows, which suit use case, class and sequence diagrams. Choose one small enough to model completely, and check the scope with your supervisor.
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