Our flowchart (Fig. 9.5) shows that transaction data enter the system through a terminal, are processed by a data collection program, and then are stored on an inventory file.
Eventually, the inventory file is processed by a
In addition to the hardware and the programs, we will need data structures for the inventory file and for data flows between the I/O devices and the software.
A direct access inventory file seems a reasonable choice.
Should the inventory file be organized sequentially or directly?
