43115
Description
Flashcards by Verity Spinks, updated more than 1 year ago
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Created by Verity Spinks
about 11 years ago
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| Question | Answer |
| What does Data mean? | Raw facts and figures that are alphanumeric with no meaning. E.g 4444HH1??? |
| What does Structure mean? Give an example | How the data is present, organised in a certain way. £NN/NN |
| What is meant by Context? | An environment where prior knowledge and understanding can make sense of data |
| Name two representation methods and say one advantage of them | Sound: can be heard from anywhere in the area Graphics: Multilingual |
| What data type would you use if you were entering Money? | Real/Currency |
| If driving along the road and there was a sign, which representation method would you use and why? | Graphics because they are multilingual and they can be read quickly without problems (unless you don't understand the symbol) |
| If john asked 13-18 year olds how often they went on social network sites, what source of data would it be for John? | Direct Data, because he collected it himself. |
| Give two advantages of dynamic data? | Can personalize the websites (if used) and security can be added to the specific person |
| Describe the term Accuracy to do with Quality of Information | the correctness of the data given |
| Describe two advantages of Encoding | Data is shortened so you can store more in the same space, Security, the key has to be known |
| Give two reasons why data should be archived | Speeds up the computer and Free's up space in the drive |
| What is a Lookup check? | Based on a value cross referencing and returning a single value/list of values |
| What is a check digit validation? | Mathematical calculation that results in a single number to compare. |
| Identify two methods of presenting information that isnt text or Graphics? | Sound and LED |
| Describe Completeness. Include an example | making sure all the information was there for example having a phone number with the area code at the beginning |
| Name two validation methods you would use for a phone number? | Presence check-make sure it's entered |
| What is the difference between information and knowledge? | Information is a certainty, Knowledge changes depending on the information or environment. |
| What is the purpose of Validation? | To make sure the data is sensible/reasonable/in the right format/within set boundaries |
| Two different consumable costs that are used in producing a leaflet | Paper and Toner. |
| Difference between backing up and archiving? | Backing up is coping the data, Archiving is moving the original data. |
| Difference between static and dynamic data? | Static stays the same and Dynamic can be changed and updated. |
| What is meant by Input, processing and Output? | Input: when you enter the data from an external system. Processing- using formulas or calculations on data inputted Output: Printing, or putting Information onto a CD |
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