a.Data creation:It’s the process of putting together facts in an organized manner.
There two basic alternatives;
•Source documents – A great deal of data still originate in the form of manually prepared documents.
•Data capture – Data is produced in machine-sensible form at source and is read directly by a suitable device e.g. a bar code reader.
b.Data transmission:This depends on the method and medium of data collection adopted:
•If computer is located at a central place, the documents will be physically transmitted i.e. by the postman or courier services.
•It is also possible for data to be transmitted by means of telephone lines to central computer. In this case no source documents would be involved in the transmission process.
c.Data preparation:This is the transcription (conversion) of data from the source documents to a machine-readable form.Data collected using devices that directly capture data in digital form don’t require transcription.
d.Data conversion:Data may need to be converted from one media to another e.g. from floppy disk to hard disk for input to the computer.
e.Input validation:Data entered into the computer is subjected to validity checks by a computer program before being used for processing.
f.Sorting:This stage is required to re-arrange the data into a sequence required for processing. It’s a practical necessity for efficient processing of sequentially organized data in many commercial and financial applications.
Steve ju answered the question on June 6, 2018 at 21:06
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