ICT- Data, Information, Knowledge & Processing

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What is Data?
Raw facts and figures that can be alphanumeric and have no meaning
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What is the Data transition?
Data, Information, Knowledge, Wisdom
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What is information?
Processed data that is given meaning by its context and so made more useful
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what is the formula for information?
Information = Data + Context + Meaning + Structure
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What is Knowledge?
The result of interpreting information and is used to set up rules
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What is the difference between information and knowledge?
information is based on facts wheres knowledge is based on rules and these rules are based on probability
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What is the Boolean data type?
It is either TRUE/FALSE, or 10
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What is the Integer data type?
Holds whole numbers only
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What is the Real data type?
Holds decimal numbers
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What is the Text/String data type?
Holds any alphanumerical character, which can include numbers and symbols
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What is a static source of information?
A source of information that isn't likely to change
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What is a dynamic source of information?
A source of information that is continuously updated
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What is meant by the coding of data?
This is changing the original data into a shortened version in order to store it in the computer
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What are the benefits of coding data?
Less storage space required - Quicker - Small number of codes exist making it easier to match them against the rules - codes are easier to remember
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What are the problems of coding data?
The data isn't very precise - User needs to remember the codes - people might have more than one judgement
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What is the Hardware cost of information?
To collect, analyse and output the data - storage space to hold the data
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What is the Software cost of information?
Required to analyse the information and make a report based on the results - Maintenance agreements - software licences
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What is the Manpower cost of information?
People who are employed to collect or enter the data - maintenance of Hardware and Software
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What is Direct data?
Data that has been collected from an original source
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What is Indirect data?
Data that has been used for a purpose different to the purpose as to why it was collected in the first place.
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What is an archive?
data which is not used frequently and has been placed in an archive and is often old data
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What is meant by a Back up?
A copy of a current system or file
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What are the d=factors affecting the quality of information?
Accuracy, Relevance, Age, completeness, Presentation, level of detail
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What is meant by GIGO?
Garbage in garbage out
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What is verification?
Ensuring the source data is the same as the object data
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What is computer verification?
You enter the data in twice and the computer checks the two entries to see if they are the same
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What is manual verification?
You enter the data in and check manually from the screen against the source
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What is Lookup verification?
Having part of the data and retrieving the rest/checking the rest by looking up the data on a list
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Other cards in this set

Card 2

Front

What is the Data transition?

Back

Data, Information, Knowledge, Wisdom

Card 3

Front

What is information?

Back

Preview of the front of card 3

Card 4

Front

what is the formula for information?

Back

Preview of the front of card 4

Card 5

Front

What is Knowledge?

Back

Preview of the front of card 5
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