DFD of Online Shopping Cart – Data Flow Diagram

The DFD of Online Shopping Cart is a representation of the flow of data in all processes present on the shopping cart.

In addition, the data flow diagram for the shopping cart has three DFD levels (levels 0, 1, and 2) that elaborate the flow of data.

Lastly, DFD for shopping cart also includes entities (users), processes, and data (input and output). It defines the whole system using symbols.

What is Online Shopping Cart DFD?

The DFD (data flow diagram) is a method used for Online Shopping Cart development which represents the system’s data flow and alternatives that generate the internal flow of data.

Additionally, the data was properly categorized to illustrate the online shopping system structure.

Details of Shopping Cart Data Flow Diagram

The table shows the project name and details of the Shopping Cart System Data Flow Diagram. It has complete information about the project.

Name:Shopping Cart Data Flow Diagram
Abstract:The Shopping Cart Data Flow Diagram (DFD) shows the structure of the project in terms of its data management. It contains the important details on the flow of data and alternatives done in the project.
Diagram:Data Flow Diagram also known as DFD
Users:Seller, Buyer (Customers), and Admin
Tools Used:You may use any Diagram tools that provide data flow diagram symbols.
Shopping Cart Data Flow Diagram (DFD) – Details

Shopping Cart Data Flow Diagram Example

A thorough explanation is provided for the example data flow diagram for the shopping cart. This example emphasizes the three DFD levels (DFD Levels 0, 1, and 2).

Level 0 DFD Diagram for Shopping Cart

The context diagram is an alternative name for the Level 0 DFD Diagram for Shopping Cart.

In addition, the users, data process, and data flow make up its parts. Also, the project concept is demonstrated using the single data visualization.

DFD Level 0 shows the entities that interact with a system and defines the border between the system and its environment. This diagram also depicts Shopping Cart Project at a high level.

Data Flow Diagram (DFD) Level 0 for Shopping Cart
Level 0 DFD Diagram for Shopping Cart

The illustration presents the main process in a single node to make the project context more reliable. This DFD thoroughly explains how the project works in simple way. The user feeds data into the system and then receives the output from it.

DFD Level 1 Diagram for Shopping Cart

The (detonated view) of the context diagram is Shopping Cart DFD Level 1. Its function is to deepen the concept derive from the context diagram.

Data Flow Diagram (DFD) Level 1 for Shopping Cart
Level 1 Data Flow Diagram (DFD) for Shopping Cart

The designed diagram portrays three different scenarios: product management, order management, and payment and deliveries. First, the flow of data starts from the seller and the customer. Then the system caters to the transaction. This idea was based on shopping processes or transactions.

Level 2 DFD for Shopping Cart

Level 2 DFD for Shopping Cart is also the highest abstraction of the data flow diagram. This level also broadens the idea from the DFD level 1. It includes the sub-processes from level 1 as well as the data that flows.

Data Flow Diagram (DFD) Level 2 for Online Shopping Cart
Data Flow Diagram (DFD) Level 2 for Online Shopping Cart

However, not all of the processes in the project must have sub-processes. Only provide this diagram if needed. As long as your previous diagrams were clear and precise, this level is not required.

Shopping Cart (DFD) Data Flow Diagram Pdf

You may download the Data Flow Diagram for Shopping Cart PDF by clicking the button below. It has the full details and discussion of the shopping’s Data Flow Diagram. You can also modify its content to complete your project requirements and needs

Data Flow Diagram Notations:

  • External Entity: this symbol is used for users. An entity provides or receives information and communicates with the system. They are the origins and destinations of data entering and exiting the system.
  • Process: is the part of DFD that modifies data and generates an output. It also executes calculations, sorts data according to logic, or directs data flow according to business standards.
  • Data Store: A database table or a membership form are examples of files or repositories that store information for later use. Developers should also give a basic label to each data storage.
  • Data Flow: is the path taken by data between external entities, processes, and data repositories. It depicts the interface between the other components. It is represented by arrows and labeled with a data name.

These data flow diagram notations represent the total data handling. Using these Data Flow Diagram symbols would also help to draw attention to the system’s architecture in a simpler way.


In conclusion, we have discussed the things that we need to know in order to create a data flow diagram for online shopping cart. Its main purpose is to emphasize the transformation of data from input to output. Along with this, DFD levels were very useful in elaborating the system.


If you have inquiries or suggestions about DFD of Online Shopping Cart, just leave us your comments below. We would be glad to hear to concerns and suggestions and be part of your learning.

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