 |
| Information Systems |
VU
Information
System (CS507)
Arrow
The usual
direction of the flow of
a
procedure or
system is from left
to
right or
top to bottom.
or
Ensure
that the flowchart has
a
logical
start and finish.
Terminator
Only one
flow line is used in
conjunction
with terminator
symbol.
Process
Only one flow line
should come out
from a
process symbol.
Decision
Only one
flow line should enter a
decision
symbol,
but two or three flow
lines, one for
each
possible answer, should
leave the
decision
symbol
<0
>0
=0
<0
>0
97
VU
Information
System (CS507)
Connectors
If the
flowchart becomes complex,
it
is better to
use connector symbols
to
reduce the
number of flow lines.
Avoid the
intersection of flow lines
if
you want
to make it more effective
and better
way of communication.
Predefined
Process
This
represents a named process
consisting of
one or more
operations
or program
steps specified
elsewhere
Single
Document
Off-Page
Connector
Use to connect
remote flowchart portion
on
different
pages. One flow line enters
or
exits.
Input /
Output
Used
whenever data is into the
flowchart or
displayed
from the flowchart. A single
flow
line
enters and a single line
exits.
98
VU
Information
System (CS507)
Input /
Output
· Used whenever
data is entered
into the
flowchart or displayed
from the
flowchart.
·
A single
flow line enters and
a
single
line exits.
Good
Practices
Like
every other methodology, flow
charts also have a set of
recommended practices for
flow charts:
·
In drawing a
proper flowchart, all
necessary steps that are a
part of process should be listed
out in
logical
order.
·
The
flowchart should be clear, neat
and easy to follow. There should
not be any room
for
ambiguity in
understanding the flowchart.
·
It is
useful to test the validity of the
flowchart.
99