Information Technology Exam Guide Unit 5: Information Processing



CXC Information Technology Guide: Unit 5: INFORMATION PROCESSING

INFORMATION TECHNOLOGY EXAM GUIDE:

UNIT 5: INFORMATION PROCESSING

 

GENERAL OBJECTIVE:

On completion of this Section, students should develop an understanding of the principles, organization and operation of Information Processing Systems.

 

 

 

SPECIFIC OBJECTIVES:

The student should be able to:

CONTENT
1.

Distinguish between data and information;

 

Data as raw unprocessed facts; information as processed data.
2.

Explain the characteristics and functions of Information Processing;

 

Forms of Information Processing: automation, process control, commercial, industrial, and scientific data processing; information retrieval and management.

 

3.

Identify the sources of data in specified application areas;

 

Source document, turnaround document, machine and human readable document.
4. Describe methods of validation and
verification of data;

Difference between validation and verification.

Methods: range check, reasonableness checks, data type checks, inconsistency checks.

 

5.

Identify appropriate verification and validation checks given a particular scenario;

 

Such as double entry to identify and correct typographical/transposition errors.
6.

Describe various methods of file organization and access;

Sequential field ordering; random, index-sequential; direct access, sequential-access.

 

7.

 

Select appropriate file organization for particular application.

Associate an appropriate file structure and access method to a specific application.
For example, a payroll file would be organized sequentially with sequential access.

 


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trish (not verified)
geography

i need some information on the forming of fold mountains..my text is outdated.

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June (not verified)
eglish

How can I gain access to this site?

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Sexy K (not verified)
Chemistry

Why can't I just get it?

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kemmoy (not verified)
Information technology

you will get it soon

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I.Reid (not verified)
IT, Chemistry Physics

I want to do some studying on my own.

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ivan matlapeng (not verified)
information technology

you can even make weding invitations,broaches,flies and making smart business cards using word processor

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