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51 Cards in this Set
- Front
- Back
Data/Information |
Data is raw facts and figures Information is data which has been processed in some way to give it meaning |
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Quality indicators of data |
Accuracy Complete Relevance Up to date Presented effectively |
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Quality indicators of a form |
Instructions Title Space Text Logo Prompt |
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DDE? |
Direct Data Entry |
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OMR |
A method of data that scans forms which have been filled in using marks/ticks |
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Advantages of using OMR |
OMR can speed read large quantities of data by the computer without using the keyboard |
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Disadvantages of using OMR |
The cost of buying OMR equipment is high |
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OCR? |
Taking paper based documents and transforming them into editable computer files |
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Advantages of using OCR |
Large quantities of text can be inputted quickly Handwriting can be read directly |
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Disadvantages of using OCR |
Highly accurate systems are expensive Dirty/marked documents can't be read |
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Where do you use OMR? |
The national lottery Multiple choice tests |
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Where do you use OCR? |
Libraries The post office |
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Data validation |
An automatic computer check to ensure that the data entered is sensible and reasonable |
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Check digit? |
The last digit on a code used to check the other digits are correct |
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Format check? |
Checks the data follows a certain pattern |
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Length check? |
Checks the data isn't too short/long |
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Lookup table? |
Looks up acceptable values in a table |
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Presence check? |
Checks the data has been entered into a field |
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Range check? |
Checks that a number is between a lower and upper limit |
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Spell check? |
Looks up words in a dictionary |
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Type check? |
Checks if the data is a number or letter |
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Verification |
Performed to ensure that the data entered exactly matches the original source |
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Double entry? |
entering the data twice and comparing the copies |
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Proofreading data? |
Someone checking the data entered against the original document |
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Check digit method? |
1 List numbers 2 Add weights 3 Multiply the number by the weight 4 Calculate the sum 5 Divide by 11 and calculate remainder 6 Calculate check digit. 11 - remainder |
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Data compression? |
Used to convert digital data to as small as possible |
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Resolution |
The electronic pixels |
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DPI? |
Dots per inch |
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Data portability |
Being able to transfer data form one system to another |
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CSV files? |
Comma seperated variables (.csv) Holds data which is deprecated by commas |
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RTF files? |
Rich text format (.rtf) Allows users to transfer data between different applications |
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JPEG files? |
Joint Photographic Experts Group (.jpeg) Any graphic image file produced by using a JPEG standard |
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SVG files? |
Scalable vector graphics (.svg) Images are scalable and will adjust in size and resolution |
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MPEG files? |
Moving Picture Experts Group (.mpg) Any moving picture produced by using an MPEG standard |
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PICT files? |
(.pict) Supports high quality images and can be compressed |
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TIFF file? |
Tagged Image File Format (.tiff) Graphics file format and stores bitmapped images |
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GIF files? |
Graphic Interchange Format (.gif) Supports compressed images, transparency and animation |
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TXT files? |
Text files (.txt) A simple text tile which holds letters and numbers |
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ASCII files? |
American Standard Code for Information Interchange (.asc) A plain text file which can be read with any text editor |
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MIDI files? |
Musical Instrument Digital Interface (.midi) Digital musical instruments are connected as input devices to the computer. They are sound files |
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MP3 files? |
MPEG 1 - Audio Layer 3 (.mp3) CD quality compressed recordings that are about ten times smaller than the CD |
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MP4 files? |
MPEG 1 - Audio Layer 4 (.mp4) An acronym for MPEG-4 (moving picture experts group). Used to compress video files. |
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PDF files? |
Portable Document Format (.pdf) Documents that can be viewed and proofed without the same software installed |
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HTML files? |
Hypertext Markup Language (.html) The language used to create webpages |
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ZIP files? |
(.zip) A popular data compression format. Files that have been compressed with the ZIP format are called ZIP files |
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Word Document files? |
(.doc) Used for saving Microsoft Word documents |
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Excel Spreadsheet files? |
(.xls) Used for saving Microsoft Excel Spreadsheets |
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PowerPoint Presentation files? |
(.ppt) Used for saving Microsoft PowerPoint Presentations |
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Bitmap files? |
(.bmp) Used for saving a bitmap image file |
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Wave files? |
(.wav) Used for saving a Windows Sound file |
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Audio Video Interleave files? |
(.avi) A common Windows video file. |