Class Diagram for Online Car Rental System

ONLINE CAR RENTAL SYSTEM CLASS DIAGRAM – is a designed structure that shows the systems’ classes and their relationships. This UML Class Diagram is made to guide programmers along with the Online Car Rental system development. It contains the systems’ class attributes, methods as well as the relationships between classes. The class diagram makes sure that your Online Car Rental system development is inline with what should be its functions.

Here’s what you need to know about the Diagram for Online Car Rental System. It must contain all the needed information and must be complete in details. From the Classes, its attributes and methods up to its visibility and relationships must be arrange and declared thoroughly. Now you must know the needed information before doing your UML Class Diagram for Online Car Rental System.

Important Considerations before Designing your UML Class Diagram for Online Car Rental System.

You must be informed that a Online Car Rental system is a web-based system for a car rental business. This technology allows the company to make its services available to the general public via the internet while also keeping track on their performance.

Here are the advantages once the system is developed:

  • It saves both time and money.
  • Customers can get immediate assistance from the rental system.
  • Customers can book their rentals quickly and easily using the rental system.
  • It saves paper by eliminating the need for contracts, invoicing, and other paperwork.

It keeps track of all the information regarding the car, the booking, the insurance, and the car. The goal of the project is to create an application software that will eliminate manual labor in the areas of car management, payment, booking, and customer service.

The Online Car Rental System’s major goal is to keep track of the data of the car, payment, customer, supplier, and insurance. Therefore you must be aware of all the information needed in constructing its class diagram. The factors mentioned should be present and represented by classes provided with their attributes. You also have to plot their relationships because it will be the guide in the system development.

So if you worry about the UML Class Diagram components, there’s a complete discussion for that. They were given examples and forms for you to fully understand how the diagram works. It discusses the UML Class Diagram Classes, Attributes and Relationships. These are the important factors in building the structure of Online Car Rental System.

How to Construct Online Car Rental System UML Class Diagram?

Now to create the Diagram for Online Car Rental System, you will determine first its classes. So the classes that are included in an Car Rental System would be the cars, rentals, customers, payment, reservation, and transaction. The mentioned classes were just general. If you want more complex or wider scope of your Online Car Rental system, then you can add your desired classes. You must also include the database on your Class Diagram for your system.

After knowing all the necessary classes, you will then assign their attributes and methods in accord to their functions. The attributes and methods’ visibility also matters a lot. You just have to be guided accordingly in creating your UML Class Diagram. This is to keep you from unwanted repetitions and mistakes. And if you have successfully made this diagram, you will then easily build you Online Car Rental System.

Simple Class Diagram (UML) for Online Car Rental System

Time needed: 5 minutes.

Here, I will be showing you the sample constructed Online Car Rental System Class Diagram. It was provided with its attributes with matching methods. This is constructed with the simple idea derived from the common function of a Car Rentals.

  1. Class Diagram for Online Car Rental System Construction

    The illustration shown in this article gives you the hint on how will you design your own Online Car Rental System UML Class Diagram. It has the simple idea on how the class Diagram works.

    It resembles a flowchart in which classes are represented as boxes with three rectangles inside each box. The top rectangle has the class’s name; the middle rectangle contains the class’s properties; and the bottom rectangle contains the class’s methods, commonly known as operations.
    UML Class Diagram for Online Car Rental System
    As you can see through the illustration, the classes were determined which is symbolized by boxes. They were designated with their corresponding attributes and shows the class’ methods. Their relationships are also plotted to show the connections between classes and their multiplicity.

    You should also look into the visibility symbols displayed in the diagram. These are important because it declares the status of attributes in your Class Diagram. Some of the Class’ attributes are for public (+) which means that they can be accessed by the classes connected to them. While the protected (#) symbols, means that the attributes of the data can be accessed by the same classes or subclass and the (-) symbol means it cannot be accessed by other class.

    Just bear in mind that when you create your own class diagram, you have to be specific. That is because, it will affect your project development. Do not worry because you can use the sample given as your project reference or you may also create your own.

Bonus Tips on Designing the UML Class Diagram of Online Car Rental System

To design your Class diagram, you may use platforms and editing tools online. These tools are helpful since they already have the needed symbols to illustrate your class diagram. You just have to plot the included classes, attributes and methods. Then you will put the appropriate relationships that the system requires.

The platforms or online tools that you may use are:
• Lucidchart
• Creately
• Smartdraw
• Edrawmax
• Canva


The Car Rental System Class Diagram is a modeled diagram that explain its classes and relationships. The diagram depicts the names and attributes of the classes, as well as their links and, their methods. It is the most essential type of UML diagram which is critical in software development. It is an approach to show the system’s structure in detail, including its properties and operations.

The Car Rental System must have a designed diagram to define the classes needed for the desired outcome. It is used to model the items that make up the system, depict their relationships, and define what those objects perform and the services they provide.

And that completes our discussion fellas! I hope that this article about UML Class Diagram for Online Car Rental System will help you a lot.

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