Activity Diagram for Online Shopping System

Activity Diagram for Online Shopping System

The online shopping system activity diagram is a statechart diagram variation that is a graphical representation of an executed collection of procedural online purchasing actions. This section goes into great detail about the parallel and conditional activities, use cases, and system functions.

An activity diagram provides a view of the system’s behavior that illustrates the series of actions in a process. Programmers use the UML activity diagram to understand the high-level flow of an online shopping system. It also enables them to pinpoint the constraints and elements that contributed to specific incidents. When making complex judgments, a flow chart becomes an activity diagram.

Online Shopping System Activity Diagram: Details

The table shows the project details of the activity diagram for online shopping system. It has the complete details of the project.

Name:Online Shopping System Activity Diagram
Abstract:The Online Shopping System Activity Diagram in UML represents the behavior of the project in terms of its activities. It contains the important details on the activities and constraints done in the project.
UML Diagram:Activity Diagram
Users:System Admin, Sellers, and (Shopper) Buyers.
Tools Used:Diagram tools that provide activity diagram symbols.
Online Shopping System Activity Diagram – Details

Online Shopping System Definition

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E-Commerce Website DFD Level 0 1 2 | Best Data Flow Diagram 2021 | Context Diagram

An online shopping system is a type of electronic commerce that allows customers to buy goods or services directly from sellers over the Internet via a web browser or a mobile app. The major goal of the online shopping system is to keep track of shopping, the internet, payment, bills, and customer information. It keeps track of all the information related to shopping, products, customers, and shopping.

The availability of internet businesses allows you to shop from the comfort of your own home. It’s difficult to find any in stores that are open 24 hours a day, seven days a week. Online Shopping systems can assist clients in obtaining merchandise and save time while shopping. The drawback of online shopping is the lack of trust.

Importance of Online Shopping System Activity Diagram

The importance of Online Shopping System Activity Diagram is that it enables interaction between developers and clients. This is done by helping them visualize the system’s functionality in various degrees of detail.

The activity diagram involves major activities to define the workflow of the project. These activities come with user decisions that result in more effective interaction. Being a programmer, these are the important roles that the Online Shopping Management System should have.

UML Activity Diagram for Online Shopping System

The UML Activity Diagram for Online Shopping System is one of the methods used for project development. It represents the system’s major activities and constraints that lead to paths that the project includes. They were labeled properly to guide programmers and users about the behavior of online shopping systems.

Additionally, the activity diagram depicts online shopping operations as a series of actions. These diagrams are used to document and define the system processes and use cases. It can clarify difficult use cases to simplify and improve any process. An activity diagram also models the system’s actions, functions, and processes.

Example UML Activity Diagrams for Online Shopping System

The example activity diagrams for online shopping system with swimlanes are given to expound its ideas. This activity diagram using swimlanes is shown in different scenarios and is based on its users. Note that you may change the ideas given in this activity diagram to meet the scope of the online shopping management project that you desired. The given ideas here are sorted based on the system users to give you more detailed examples.

Online Shopping System Activity Diagram (Shopper Side) – In this illustration, you will see the interaction between the online shopper and the system with the flow of arrows in the system using swimlanes. Then you can see the activities done by the online shopper in the system. These activities are common in online shopping management systems which is why they are present in this diagram.

Online Shopping System Activity Diagram (Shoppers’ Side)

You can have this activity diagram and modify its illustration to emphasize more of your desired functions. The functions that you could include must correspond to the needs of the shoppers to make your project effective and flexible.

Online Shopping System Activity Diagram (Seller Side) – Now here’s the activity diagram illustration of the online shopping management system on the seller’s side showing the interaction using swimlanes. This diagram is made to show you how will the online shopping system interact with the sellers while they manage their products and sales.

Online Shopping System Activity Diagram (Seller’s Side)

The ideas and scenarios presented here were common in selling activities. Then these ideas were applied in this activity diagram to show you how would the system treat its users on the selling side. You can add and use these ideas on your own.

You should be informed that these diagrams can be modified to achieve your desired system behavior. You can also create your unique system function to justify all of your clients’ needs. And if you want, you can copy all the ideas presented here so you won’t need to create a new one.

Online Shopping System Activity Diagram Pdf

You may download the PDF file 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.

Activity Diagram: Benefits

The Activity Diagram Benefits are as follows:

  • An Activity Diagram helps in understanding how an online shopping algorithm works.
  • It describes the steps that a UML use case takes.
  • Shows how users and online shopping interact in a process or workflow.
  • Clarify difficult use cases to simplify and improve any process.

Steps in Developing the Activity Diagram

Time needed: 5 minutes.

Here are the steps in developing (designing) the activity diagram for online shopping system.

  • Step 1: Familiarize Activity Diagram Symbols

    Activity Diagram Symbols – are used to create an Activity Diagram which was presented here. Their symbols and applications must be familiarized before you build the Activity Diagram.
    Activity Diagram Symbols
    • Start – is the beginning of the action is symbolized by a filled circle. A dark circle represents the initial node.
    • Action – is a stage of an activity in which users or software accomplish a certain task. Actions are represented by round-edged rectangles.
    • Decision – represented by a diamond and is used to symbolize a conditional branch in the flow. It has two or more outputs and a single input.
    • Swim Lanes – are the lanes drawn as boundaries, and the activities drawn in the same lane as the organization’s activities. Swim lanes must be arranged in a logical order.
    • Activity Flow – is another name for the connectors in the diagram that illustrate the flow between processes (activity).
    • End or Terminator – is the last phase of the activity. An indicated black circle represents the final node.

    Each of these activity diagram symbols shows the overall system behavior. Emphasizing the System’s behavior would be much easier by using these Activity Diagram symbols.

  • Step 2: Identify the flow of actions.

    After familiarizing the symbols used in designing an activity diagram, you then need to identify the flow of actions included based on your use case diagram. The flow of actions or steps in an activity diagram describes the sequence or series of activities that happen when a user invokes the online shopping system.

    An action represents a discrete unit of functionality in an activity diagram. It is used to describe the steps in a use case diagram. The flow of control and data to and from other activity nodes is specified by the incoming and outgoing activity edges of actions. When all of the input requirements are met, the activity’s actions begin.

  • Step 3: Add the Actors (users) involved.

    Actors carry out their actions on things, transforming them into other objects or changing their state. This actor is someone or something that interacts with the system from outside the system.

    The Actors are usually placed as labels on the swimlanes to indicate that the action or step performed was from them or the system. This way will help readers and developers how will the system behave or interact with actors or vice versa. It will help you as the developer understand better the system.

  • Step 4: Trace the flow of activities.

    Action or control flows (paths or edges) are utilized to depict the change from one activity state to the next. There might be several entering and outgoing action flows in this notation. It can also be sequential, branching, or run at the same time.

    The control flow determines the activity’s flow, and the inbound arrow initiates a single activity step. The flow continues along the outgoing arrow after this phase is accomplished. The flow of objects and data within activities is described by the object flow.


You need to know the diagrams used to design and develop the Online Shopping System. That is because you cannot perfectly create a fully-functional system without it. But if you create this activity diagram, you will know the possible inputs and scenarios that the system should process and perform. Not only that, you will find out the needed processes and connect them to the other UML Diagrams.

The activity diagram can be used to model the system’s activity flow. These systems are also captured in an activity diagram, which describes the flow from one system to the next. By completing the Activity Diagrams per module or per process, you will easily achieve your desired system. Check out our Related and Recommended Articles for more Learnings and Information.


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