Choosing The Organization - IBM 1130 User Manual

Choosing the Organization
Because of the interaction between processing and
organization, there are few concrete guidelines for
the user who must make this decision. However, the
following outline will help lead the way toward one
organization or the other. The payroll application
is given as the example.
1. List the processing that must be done to this
file and the required order of inputs and outputs
(see Figure 85.2).
Required Order of:
Application
INPUT
OUTPUT
No order
Same
or
Doesn't as
doesn't matter
Other matter input
Other
Edit input
Same as
cards later
J
process,
Calculations
Employee
.;
number
Payroll
Employee
register number
,J
Payroll
Employee
,J
checks
number
941 report Employee
,J
number
Name and
address
,J J
stickers
Figure 85. 2.
Section Subsections Page
85 30
I
10 01
2. How many different sequences are there?
a. None. No one really cares what the proc-
essing sequences are (order of card in-
put, order of output on reports, etc.).
Make sure this is so. If it is, go to step 3.
b. One. There is only one basic processing
sequence des ired; go to step 4.
c. More than one. This complicates the
matter. Go to step 5. Processing
sequences needed:
1.
2.
3.
4.
5.
3. No one cares what the processing sequence is.
This is unusual but does sometimes occur. If this
is so, you can forget about processing, and choose
an organization as an isolated problem, entirely
separate from processing.
4. This file will never be processed in more than
one sequence. Therefore, it would seem like a good
idea to organize it either sequentially or randomly,
in the same order as that required by processing.
5. This file must be processed in more than one
order; however, it can be in only one order at anyone
time. Recheck step 1. Can any of the inputs be hand-
or machine-sorted into the same order as another in-
put? Can some of the output orders be relaxed? Can
you somehow reduce the number of orders required?
If you can reduce it to one, you can go to step 3 or 4.
If not, you must sort your file from one order to the
other, or otherwise work around this problem.