Activity Diagram for Railway Reservation System

The activity diagram for online railway reservation system is a UML activity diagram built to give the developer the right ideas on how to develop the said software with an explanation.

When designing this system activity diagram, you must show the flow of activities that are done in making railway reservations.

What is a Railway Reservation System Activity Diagram?

The Railway Reservation System Activity Diagram diagram is used to help developers, readers, and users to understand how the software should behave once it is used.

Moreover, the activity diagram shows the core of the system along with symbols like actors, swimlanes, and arrows.

The users of this railway reservation system would be online railway passengers or customers. Hence, it should be determined first in making an activity diagram.

Wherein it serves as actors who will use the system and then proceeds in designing a series of activities or reservation processes that happen on the system.

Purpose of Activity Diagram

The Railway Reservation System must have an activity diagram so that programmers could understand how the software should interact with its users.

Particularly, the activity diagram guides the programmer in creating the software and its must-have behavior. So if you want friendly and effective or easy-to-use software, then you must also complete the activity diagram.

Through the activity diagram, you’ll be able to illustrate the flow of activities and know what should be the interactions between the system and its users.

The activity diagram will also help your readers and users understand how to use the system. So it is best for you to explain your thoughts regarding with system through an activity diagram.

Activity Diagram Symbols:

Before we create the activity diagram of the system, we must know first the symbols used to create it.

Here are the symbols used in the activity diagram.

Activity Diagram Symbols
Activity Diagram Symbols

We must be familiar with these symbols in order for you to distinguish what should go in the illustration to avoid misunderstandings. This is also to familiarize with the activity diagram used thus the users will understand the system’s behavior.

Activity Diagram of Railway Reservation System

The activity diagram for the Railway Reservation System gives an explanation of the general flow of activities when doing a railway ticket reservation online.

Now, to make this kind of diagram, you have to figure out the processes, the people who will use it, and the way it will work.

The following are activities we can consider in the system:

  1. The customer will invoke the system, then the system caters to the customer’s request.
  2. The customer will request to avail a reservation for the railway, so the system will then check if there’s still a reservation available.
  3. Then the customer will process the reservation.
  4. The railway crew or admin will confirm the reservation.

Here is the example design of the Railway Reservation System activity diagram:

Activity Diagram for Railway Reservation System
Activity Diagram for Railway Reservation System

Note: The ideas given in this activity diagram to meet the scope of the railway reservation system project can be changed depend on what you desire. The given ideas here are sorted based on the system users to give you more detailed examples.


In conclusion, it is essential for you to know the explanation of the diagrams used to design and develop the railway reservation system. This is due to the fact that, without it, it is impossible to create a fully functional system.

But before you create this activity diagram, you will know first the possible inputs and scenarios that the system should process and perform. You will also figure out what business processes are needed and link them to the UML diagrams.

By filling out the Activity Diagrams for each module or process, you will easily get to the system you want.


Now, what have you learned through our discussion? Have you determined the diagrams that you must create? What project do you have in mind?

And, if you have any suggestions or questions about our discussion, please leave them in the comments section. Your thoughts are highly appreciated. Thank you so much and have a good day!

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