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8 Cards in this Set
- Front
- Back
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What is data?
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data is a set of raw facts and figures or a series of values produced as a result of an event/transaction
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What is information?
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Information is data that has been given a context or proccessed to give it a meaning
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What is knowledge?
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Knowledge is derived from information by applying rules to it.
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How can you capture data?
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use of keyboard
speech recognition webcam touch screen sensors barcode reader |
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what is the difference between direct and indirect data capture?
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Direct data is a collection for a specific purpose. EG: barcodes being scanned on a product. Account details being read from a credit card chip.
Indirect data is a collection as a by-product from data collected for another purpose. eg: using data collected from reading barcodes at a supermarket till to work out stock levels |
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Define encoding data.
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Encoding data is data that has been processed to produce information
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What is lost due to coding and provide a suitable example?
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Precision is lost due to coding. EG: people classed in a 24-34 age bracket might not produce a pattern of results you were expecting.
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Why is encoding data used? provide 2 examples
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The code is shorter, therefore less errors are likely to be made.
The code takes up less storage on disk and less main memory Ensures the data is consistent. |
