Second Level Data flow Diagram(2nd Level DFD) of Online Banking System :ĭFD Level 2 then goes one step deeper into parts of Level 1 of Online Banking. Processing Account Type records and generate report of all Account Type.Processing Customer records and generate report of all Customer.Processing Branch records and generate report of all Branch.Processing Balance records and generate report of all Balance.Processing Transaction records and generate report of all Transaction.Processing Account records and generate report of all Account.Processing Bank records and generate report of all Bank.Main entities and output of First Level DFD (1st Level DFD): You will highlight the main functionalities of Online Banking. DFD Level 1 provides a more detailed breakout of pieces of the 1st level DFD. It also identifies internal data stores of Account Type, Customer, Branch, Balance, Transaction that must be present in order for the Online Banking system to do its job, and shows the flow of data between the various parts of Bank, Transaction, Customer, Account Type, Branch of the system. First Level Data flow Diagram(1st Level DFD) of Online Banking System :įirst Level DFD (1st Level) of Online Banking System shows how the system is divided into sub-systems (processes), each of which deals with one or more of the data flows to or from an external agent, and which together provide all of the functionality of the Online Banking System system as a whole.
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