1) table name; name of the table unique for each table in the database 2) field name: unique name for each field 3) datatype; allocated to each field e.g Boolean
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why are thumbnails used
1) prevents theft; qulaity of image is poor 2) wide range of images at a time; end user can get overview on what is on offer
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Bitmap graphics characteristics
made up of pixels; each pixel can be a different colour 2) pixelates (pixalation occurs when image is enlarged)
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vector image characteristics
change size of graphic without losing quality 2)objects can be grouped (clipart)
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disadvantages of encoding data
might eventually run out of code combinations 2) meaning of data can be obscured (e.g) blue can mean light bleu
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disadvantages of networking
viruses; rapidly spread around the network work stations 2) slow service; the network slows down alot if alot of users are on it t the same time
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advantages of networking
data can be backed up; back ups are made centrally 2) access to files; monitor employees 3) communication; to solve problems
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what is utlility software
assist the user in basic tasks 2) provides additional service not included in application
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operating system software
communicate with hardware 2) interface between users and comuters
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why use usb
1) portable; can be moved around locations 2)high storage; size is large enough to contain required data
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why are passwords used
1) stop individuals from having unauthorised access, unless they have password
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why are firewalls used
can only accept connections from allowed network, ties down who can access data
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online training system
use video clips; to demonstrate a feature or action 2) use images; to give additonal explenation 3) step by step features; allows a user to copy
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3 form controls
buttons (navigate from page to page) 2) textbox (personalize) 3) image (to hold logo)
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advantages of computer model
"what if questions ( WITHOUT REBUILDING OR MAKING FROM SCRATCH) 2) inbuilt calculations - less chanse of errors when calculating
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worksheet, cells,ranges
1) collection of sheets 2) individual box 3) collection of cells (all expenditure of the month)
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mail merge steps
1) create letter, link data source 2) insert merge fields, check merge fields, complete merge
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why company needs a housestyle
1) create recognition in customers 2) consistancy amongst document 3) different people can work on the same document
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why choose vector images
1) changing the size of the graphic without losing uality 2) objects can be grouped
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what is a stock library
1) uses keywords and thumbnails to select photographs
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thumbnails advantages and disadvantages
1) presenting large number in a small space 2) more effective than using text to describe a photograph 3) need software to produce software 4) need to organize them effectively
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Other cards in this set
Card 2
Front
why are thumbnails used
Back
1) prevents theft; qulaity of image is poor 2) wide range of images at a time; end user can get overview on what is on offer
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