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9 Cards in this Set
- Front
- Back
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What are some ways in which data can arise? |
- From a survey - From a transaction - From the results of an experiment - From automatic measurement of environmental quantities - From the output of a management information system |
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What is coding data? |
Coding means the transformation of data into a form understandable by computer software. |
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What is encoding data? |
The process of putting information/data into a specified format that allows effective transmission or storage by an ICT system. |
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What are some types of encoding used for images? |
- Vector - GIF - JPEG - TIFF - WMF - Bitmapped |
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What are some types of encoding used for sound? |
- WAV - MIDI - MP3 - Shockwave Audio |
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The differences between data and information? |
Data is the raw values put into, stored and processed by a system and information is output with context with meaning. |
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What are some examples of processing? |
- Sorting - Performing calculations - Making decisions - Grouping - Organising |
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What is the quality of information a measure of? |
- The accuracy of the information - How easy the information is to understand - The relevance for a particular use - How up-to-date the information is |
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Why is it important to keep data up-to-date? |
It is a requirement of the Data Protection Act 1998. |
