Information Technology Reference
In-Depth Information
Table 2.2
Functions components matrix
Input
Processing
Output
Storage
Control
People
Data entry
operator
enters sales
order data
Sales order
clerk
batches
sales orders
Data
Customer
master file
Inventory
master file
Accounts
receivable
master file
Information
Customer
invoices
Customer
statements
Software
tools
Order entry
program
Inventory
program
Accounts
receivable
program
Billing
program
Access
Software
functions
Conduct
credit check
Compute
new
balance on
hand
Determine
new
receivable
amount
Hardware
Data entry
workstations
Server
Printers
Direct
access
storage
devices
be displayed as some form of output. The software is specified in terms of its
components (names of programs and prewritten packages) and the functions
that they perform.
All of the documentation that is accumulated in a project forms the
project
dictionary
. Figure 2.10 lists the contents at this point.
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