From Decision Table to DFD (continued)

DFD diagram:

  ---------->Ask user to enter ID------------->Calculate due date
   new       and veritfy against    authentic  and enter into
   user       Users database           user    BooksDue database
                   |                               |
                   |                               |
              |--------------                  |-----------------
              |Users database                  |BooksDue database
              |--------------                  |-----------------