Sales and Inventory System DFD (Data Flow Diagram)

Sales and Inventory System DFD (Data Flow Diagram)

The Sales and Inventory System DFD is a diagram used to show the overall data management of the project. It has 3 main levels that shows the Sales and Inventory data handling which is the DFD Level 0, 1, and 2. These DFD levels illustrates the Sales and Inventory data management concept from the basics up to specific details.

The DFD Level 0, 1 and 2 has their part in explaining the data handling of Sales and Inventory System. The DFD Level 0 (context Diagram) shows the overall function of Sales and Inventory System in a single process. It also serves as the main basis as you make the proceeding Levels. DFD Level 1 broadens that DFD Level 0 and the DFD Level 2 includes the databases of the all the data that will be part of the Project’s main function.

Here’s what you need to know.

The Data Flow Diagram (DFD) represents the flow of data and the transformations in sales and Inventory System. These transformations occurs as data enters and exits a system. In the DFD, input, processing, and output are used to represent and define the overall system.

The following are the potential data inputs that will flow in Sales and Inventory System DFD:

  • Sales Information
  • Customers Info
  • Stocks Information
  • Payment Records
  • Inventories

Sales and Inventory System DFD (Data Flow Diagram) and it Level 0, 1, and 2

Time needed: 10 minutes.

Here’s the Data Flow Diagram (DFD) for Sales and Inventory System and the complete details of its levels 0, 1, and 2 explaining the data management concept of the project.

Job Ordering with Sales and Invento... x
Job Ordering with Sales and Inventory System in VB.Net [COMPLETE SOURCE CODE]|(2019)
  • Sales and Inventory System DFD Level 0 (Context Diagram)

    The Sales and Inventory System DFD level 0 serves as an abstract view of the systems overall data handling. It is represented by a single node revealing the main process, external entities (users) and data (inputs and outputs). This level depicts the overall structure as a single bubble and comes with incoming/outgoing indicators showing input and output data.


    The context diagram illustration shows the general process done in enrollment management. This illustration will guide you as you go through the deeper processes of the sales and inventory system data flow diagrams. The design will have its supporting details in DFD Level 1 and will reveal more information about the Enrollment System Data Flow Diagram.

  • Sales and Inventory System DFD Level 1

    Next to the context diagram is the level 1 data flow diagram. The content of Sales and Inventory System DFD level 1 configures the included processes which is based from the context diagram. It display or reveal further processing information to emphasize the data that will be included to complete the overall function of Sales and Inventory System.


    As the included processes were determined, the data needed for the processes to be executed were also known. This illustration (DFD Level 1) gives broadened explanation of Sales and Inventory System Context Diagram. The reason why this DFD Level must have its context diagram first, is to let you know what are the only needed processes and data. This will help you refrain from unnecessary errors.

  • Sales and Inventory System DFD Level 2

    After presenting the Sales and Inventory System DFD levels 0 and 1, next to that is level 2. DFD level 2 is the highest abstraction level and will give the complete design of Sales and Inventory System Data Flow Diagram. This level also gets more specific that the previous level. It’s design also added the database that will be used to develop the program.


    The illustration in DFD level 2 let’s you know the ideas on where does the data inputs goes and inputs comes within the Sales and Inventory System. It adds the database (data storage) to its design to inform you that the system is able to secure all the data that will be used to its development. Each of the database were names d after the data that will be stored in it.

    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 can also be your references as you make and design your own project DFD levels 0, 1 and 2.

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. Considering the dataflow levels mentioned above, you can determine well the importance of breaking the processes into more specific manner.

Additional Knowledge on Sales and Inventory System DFD Level 0, 1, and 2

What is Sales and Inventory System DFD level 0?

DFD Level 0 or context diagram is the initiated idea from where the proceeding level will discuss further Data Flow Diagram explanation. It forms the main concept by plotting the main process, targeted users (external entities) and the main input and output. These information is the placed in well-order to form a single process but with complete idea about the project’s main function.

The reason that the DFD Levels must be emphasized one-by-one is to provide detailed information from the basic concept up to the broadened illustration. By doing this, you will easily know the included processes and data and avoid unwanted errors while designing all the levels.

Sales and Inventory System DFD level 1

DFD Level 1 provides broad overview and greater depth of DFD Level 0 (context diagram). The System DFD level 1 includes all of the major sub-processes that make up the entire system which makes it a “detonated view” of the context diagram.

It focuses on the included processes and data that completes the whole function of DFD Level 0. This level specifies all of the inputs that will be handled by the processes determined and the outputs that will be give to the users (external entities). These were place according to their role in the whole project just like the design given.

Sales and Inventory System DFD level 2

This level completes the design for the whole system. It adds the database to the illustration which serves as the storage of the data that will be managed in the system. The database plays a big role in developing the system because it will store the data inputs and will be the source of all the outputs.

Conclusion

So that completes our discussion fellas! And I hope that the given Data Flow Diagram (DFD) for Sales and Inventory System will help you a lot. Now let me ask you something. What have you learned through the discussion?

May this article help you with your projects in the future!

If you have inquiries or suggestions about the topic Sales and Inventory System DFD and its Levels 0, 1, and 2 just leave us your comments below.

Keep us updated and Good day!

Leave a Comment