The mentioned inputs will also generate outputs as a result. This card contains their information which should be present in the system. Library cards will serve as the borrower’s pass to borrow or purchase books from the library. This system then filters their request and notifies the librarian that there is a request to purchase or borrow a book. The book request is input from book borrowers to the library system. The information will be available for monitoring and tracking books between borrowers and library shelves. In addition, It also represents and describes the DFD for library information systems through input and output processes.įor the Library Management System, the inputs include:īook information is fed into the system for book management purposes and business processes. The DFD for the Library Management System is a representation of the overall flow of data and the transformations made when data are processed by the library management system.