Online Shopping DFD Level 0 1 2 | Best Dataflow Diagrams 2021

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Here’s the Dataflow Diagram levels 0 1 2 for Online Shopping System and step-by-step way on how to create a Online shopping DFD.

• DFD for Online Shopping System Level 0

  To start with, let us familiarize what is Online Shopping system level 0.
  
  The Online Shopping DFD level 0 is also known as context diagram. It’s supposed to be an abstract view, with the mechanism represented as a single process with external parties.
  
  In this data flow diagram you will see the general process done in Online Shopping. This will also serve as a guide as you go through the deeper processes of the Online Shopping data flow diagrams.
  
  This the Online Shopping system data flow diagram depicts the overall structure as a single bubble. It comes with incoming/outgoing indicators showing input and output data.
  
  As you see, when you build the levels of data flow diagrams, the connections of the transactions and data also broadens and gets more specific.

• DFD for Online Shopping System Level 1

  Next to the Online Shopping context diagram is the level 1 data flow diagram.
  
  The content of Online Shopping system DFD level 1 must be single process node from the context diagram and is broken down into sub processes.
  
  In this level, the system must display or reveal further processing information. And the actors that are going to use this system were the customers, seller and online shopping administrator.
  The following are essential data to accommodate:
  • Customer’s Information
  • Sellers’ Information
  • Delivery Services
  • Products Payment
  
  
  
  These procedures require information such as a list of customers, sellers, reservations and deliveries from which served as the bases for admin to manage university transactions. This type of data is represented by a data store.
  
  With being knowledgeable about the DFD level 1 of the Online Shopping System, you will know then its broaden context terms.
  
  In addition to that, this may also serve as your reference on how the inputs or data fed on the Online Shopping system. Then you will be also informed about the outputs that the system gives.
  
  These processes shown in the Data Flow Diagram were all based on the concept of Online Shopping.

• DFD for Online Shopping System Level 2

  After presenting the Online Shopping system DFD levels 0 and 1, next to that is level 2.
  
  Here’s what you need to consider in creating data flow diagram level 2 for Online Shopping.
  • The Online Shopping system Level 2 DFD should represent the basic modules as well as data flow between them.
  • Since the DFD level 2 is the highest abstraction level, its processes must be detailed that is based on the Online Shopping DFD level 1.
  
  Finally, after figuring the processes given in the system, the user will now have their request being processed.
  
  The Processes that the system should prioritize are as follows:
  • Managing Purchasing Information
  • Order Reservation
  • Product Monitoring
  • Tracing Transaction
  • Managing Payment
  • Scheduling Deliveries
  
  
  Data Flow Diagram level 2 let’s you know the ideas on where does the data inputs goes and inputs comes within the Online Shopping. Considering the the dataflow levels mentioned above, you can determine well the importance of breaking the processes into more specific manner.
  
  The presented level not only shows you the detailed processes of system, but also gives you precise destination of the data that flows in the system.
  
  This DFD will also be your references as you make your own Online Shopping DFD levels 0, 1 and 2.