DFD Level 2 should present the system specific components, database and flow of data between the processes and actors of the Online Examination Management. Here’s what you need to consider in creating data flow diagram level 2 for Online Examination Management System. Online Examination Management System Data Flow Diagram Level 3Īfter understanding the Data Flow Diagram levels 0 and 1, next in line is the level 2. And the processes shown in this DFD Level 1 were all based on the concept of the stated Online Examination Management System Project. Then you will be also informed about the outputs that the system gives. In addition to that, this level shows how the inputs or data fed on the system were processed. With being knowledgeable about the DFD level 1 of the Online Examination System, you will know then its broaden context terms. These records are used in processes stated and were stored in the data store that you will see in the next level. These procedures require information such as record of examinee’s, exam details and records, schedules and overall reports from which served as the basis for the Examination admin to manage all Examinees. 
The following are essential data to accommodate:
Then you will determined the needed data to complete each processes in Online examination System. Its main process was broken down into the processes that completes it. the ideas presented in the context diagram was broken down into more specific details. The content of Online Examination System DFD level 1 must be in accord from the idea of context diagram. Next to the context diagram is the level 1 data flow diagram.
Online Examination Management System Data Flow Diagram Level 1. It shows the main process, main actor/actors and the arrows with labels to know the flow of data.Īs you see, when you build the levels of data flow diagrams, the connections of the transactions and data also broadens and gets more specific. In this data flow diagram you will see the general process done in Online Examination System. 
It also comes with incoming/outgoing indicators or arrow showing input and output data. Then its details will be specified as the DFD levels gets more distinct. This DFD level 0 illustration depicts the overall structure of the Online Examination System as a single bubble. It’s shows an abstract view of main processes included in Online Examination System. The Online Examination System DFD level 0 is also known as context diagram. To start with, let us familiarize what is Online Examination System Data Flow Diagram level 0. Online Examination Management System Data Flow Diagram Level 0.Now here’s the Dataflow Diagram levels 0, 1 & 2 for Online Examination Management System and the explanation of each levels.
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