Component Diagram for Car Rental System | UML

Component Diagram for Car Rental System

The component diagram for car rental system is used to show how the parts work together to make the car system operate correctly. A component diagram shows how the software’s parts are organized and how they depend on each other. This diagram gives a high-level look at the parts of a system.

The potential components of car rental system component diagram can be part of software or hardware. They could be a database, a user interface, or something else that helps the car rental system work.

Component Diagram for Car Rental System: Details

The table shows the basic details of the component diagram of the car rental system. It has quick description details of the component diagram illustration.

Name:Car Rental System Component Diagram
Abstract:The car rental system UML component diagram is used in object-oriented programming to group classes together based on their common purpose. This way, the developer and others can see how a project is progressing at a high level.
UML Diagram:Component Diagram
Users:Admin, Reservation and Desk Crews, and Clients or Passengers.
Tools Used:Diagraming Tools that have UML Component Diagram Symbols
Component Diagram for Car Rental System: Content

What is a Car Rental System?

Online vehicle rental software allows you to keep precise records of your whole fleet in one location, making day-to-day operations straightforward. Your business would be illegal if you didn’t keep proper documents, and no one could audit you. You wouldn’t be able to get insurance or anything else.

Customers can hire a vehicle through a car rental web-based system. This technology allows the company to make its services available to the general public via the internet while also keeping track of its performance.

Car rental companies usually work with people who need a short-term car, like people who don’t own a car, people who are traveling outside of their city, or people who have damaged or destroyed cars that need to be repaired or replaced.

Car Rental System Component Diagram in UML

A component diagram in the (UML) Unified Modeling Language shows how parts are wired together to explain the parts of car rental systems. They are used to show the structure of any kind of system.

The UML component diagram shows how a car rental system will be made up of a set of deployable components, such as dynamic-link library (DLL) files, executable files, or web services. Using well-defined interfaces, these parts communicate with each other and keep their internal details hidden from each other and the outside world.

The Component Diagram for Car Rental System

This component diagram of car rental system is the illustration of the components of every hardware and software node. The component diagram below is a detailed illustration of the Deployment Diagram for Car Rental System.

UML Component Diagram for Car Rental System
UML Component Diagram for Car Rental System

This component diagram shows the structure of the rental system that consists of the software components and their interfaces, accounts database, transaction information, and reports information. Their dependencies explain how they work together. You can use component diagrams to show how software systems work at a high level, or you can use them to show how each component works at a lower level, like in a package.

Car Rental System Component Diagram (Explanation)

The Car Rental System UML component diagram explains the sketch of the required software and hardware components and the dependencies between them. These components are labeled to clarify their part in the system’s operation. They were represented by symbols that explain their function and role in the overall car rental system operation. The dependencies on each component are explained through the lines and arrows drawn in the diagram.

The component diagram of the car rental system has 7 components which are the user database, reports database, transaction database, client’s page, car owner’s page, admin’s page, and rental transaction. This diagram shows several interfaces that are provided and required. The side package contains the provided interface (rental transaction) which is required by the transaction database.

Car Rental System Component Diagram Pdf

You may download the Component Diagram PDF by clicking the button below. It has the full details and discussion of the system’s component diagram. You can also modify its content to complete your project requirements and needs.

Characteristics of Component Diagram:

  • In component-based development, they are used to describe systems that have a service-oriented architecture.
  • Shows how the code itself looks.
  • It can be used to focus on the relationship between the parts while hiding the specifics.
  • Help stakeholders understand how the system being built works and how it will be used.

Benefits of using Component Diagram

As complicated as it looks, the component diagram is very important when you’re building your system because it shows how everything works together. Here are the benefits of designing the car rental component diagram:

  • Imagine how the system looks in real life.
  • Pay attention to the system’s parts and how they work together.
  • Pay attention to how the service behaves when it comes to the interface.

Steps in Developing Component Diagram

Time needed: 10 minutes

Here are the steps in developing the car rental system component diagram.

  • Finalize the Function and Processes of the Software

    The first step in developing the component diagram is finalizing the processes and functions of the software. This activity will help programmers analyze what are the things needed to complete the car rental system process. Then the finalized processes or functions will be the base concept in designing the system’s component diagram.

  • Put the Components included

    A component is a piece of the system that makes sense in terms of logic. It’s a little more abstract than classes. There are tabs or the word “Component” written on top of the name of the component to help you tell it apart from a class.
    Component Diagram for Car Rental System - Components
    The component symbol is used for a person or thing that needs to do a stereotype function. It gives and takes behavior through interfaces, as well as through other parts. Components can be grouped into a node or another component and can be only one component.

  • Add the Dependencies (Ports and interfaces)

    A dependency is a relationship in which one component needs the information and services of another component, but not always the other way around. To show that one component is relying on another, you should make a connection.
    Component Diagram for Car Rental System - Dependencies
    The component’s port is a feature that indicates where the component and its environment meet. In this picture, ports are shown in the form of small squares on the sides of classifiers. It is created when one thing is needed for another thing to work. There is an “include” statement in the makefile for the component that is dependent on the other component.

    Interfaces show how components are wired together and how they work together. When a component needs a certain interface, the assembly connector lets you connect it to another component that already has that interface. It looks like a semi-circle and a line.

    A component list contains the set of interfaces that a component can use or realize. Components also need interfaces to do their job. It is part of a system that protects the things inside. They are the parts of a system that make sense and play a big part in how a system works.


You need to know the diagrams used to design and develop the Car Rental System. This method is to perfectly create a fully-functional system without unwanted errors and avoid mistakes during development. A component diagram will help you know the components of software and hardware that the project should possess. Not only that, you will find out the needed consideration for the software to work perfectly.

Component diagrams show how a system is put together. During the design phase, software artifacts (classes, interfaces, etc.) of a system are put together into different groups based on how they work together. Now, these groups of things are called parts. Check out our Related and Recommended Articles for more Learning and Information.


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