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Description
Flashcards by kati.lombardi, updated more than 1 year ago
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Created by kati.lombardi
over 11 years ago
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| Question | Answer |
| What is data? | Data consists of raw facts and figures e.g. readings from sensors and survey facts. |
| What is Information? | Information is data which has been processed by the computer. |
| What is Knowledge? | Knowledge is derived from information by applying rules to it. |
| What are the reasons for encoding data? | Coded data is less effort to type in, takes up less storage space, easier to check using validation checks. |
| What are the problems associated with encoding? | Encoded data is less accurate than the data from which it came. Encoding data often involves making a judgement about which code to use, which can be different for each person. |
| Why is it important that information is up to date, accurate and complete? | Up to date, accurate and complete information adds value to organisations by aiding decision making, monitoring progress and the targeting of resources so giving a competitive advantage. |
| What are the costs in terms of money, time and human resources to get good quality information? | Include cost of employing an expert to design data collection forms, cost of buying information from a third party and the travelling costs and other expenses for people involved. |
| How can information improve the quality of decision making? | Accurate, correctly targeted, understandable, complete, relevant, up to date information has user confidence. |
| How do you find information? | On-line (Internet, Intranet, CD Roms) and non-ICT sources. |
| How do data errors occur? | Data errors can occur during input, transcription, processing and transmission. |
| What is the purpose of validation and use of the common types? | The purpose of validation is to ensure the data entered is sensibloe and reasonable for processing.e.g. presence, format, range, data type, fixed value, check digit. |
| The purpose of verification? | To check that the data entered into the ICT system perfectly matches the source of the data. E.g double entry, proof reading, sending back printouts. |
| What are the advantages of ICT overmanual methods of processing data? | Speed of processing, data storage capacity, speed of searching, accuracy and improved security of data. |
| What factors affect the efficiency of data processing systems? | Hardware, software, operating system, communication and input. |
| What health and safety issues are associated with ICT? | RSI, stress, eyestrain, dependency, ELF radiation, back strain (posture). |
| What is the legislation covering the use of computers? | Computer Misuse Act, Data Protection Act (1998), Copyright Act. |
| What is a Database? | A large collection of data items and links between them, structured in such a way that allows it to be accessed by a number of different applications programs. |
| How can you make a database more secure? | Hierarchy of passwords, storage of data separate to programs. |
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