Processing Book records and generate report of all Book.Processing Student records and generate report of all Student.Main entities and output of First Level DFD (1st Level DFD): You will highlight the main functionalities of Library. DFD Level 1 provides a more detailed breakout of pieces of the 1st level DFD.
It also identifies internal data stores of Login, Supplier, Expiry, Address, Publisher that must be present in order for the Library system to do its job, and shows the flow of data between the various parts of Student, Publisher, Supplier, Login, Expiry of the system. First Level Data flow Diagram(1st Level DFD) of Library Application System :įirst Level DFD (1st Level) of Library Application 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 Library Application System system as a whole.
