1.3.4. Information System Activities
The basic information/data processing
activities that occur in any information systems are Input, processing, output,
storage, and control activities.
Input
of data
|
·
Data about business transactions and
other events must be captured and prepared for processing.
·
Data entry activities such as
recording and editing.
|
Processing
data
|
·
Activities such as calculating,
comparing, sorting, classifying, and summarizing.
·
Activities such as organize, analyze,
and manipulate data to convert them in to information for end user.
|
Output
of Information
|
·
Production of appropriate information
product for end users.
·
Common information products include
messages, reports, forms and graphic images.
|
Storage
of
Data
|
·
Data and information retained in an organized
manner for later use.
·
This facilitates use output later
when needed.
|
Controls
of system performance
|
·
An information system should produce
feedback about its input, processing, output, and storage activities.
·
This feedback must be monitored and
evaluated to determine if the system is meeting established performance
standards.
·
System activities must be adjusted to
produce proper information product for end users.
|
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