ISDD Notes lol N5 Flashcards
descending
largest-smallest/last-first; Z-A; 9-0
example of a web browser
internet explorer, Mozilla Firefox and google chrome
example of a compound primary key
Firstname Lastname
ways a virus can affect your computer (3)
deleting and altering files displaying unwanted messages and websites using up storage in your computer system
what do GUIs use? (4)
Windows Icons Menus Pointers
example of a search engine
google, yahoo!, Bing and ask.
Define: standalone
a computer that is not connected to any other computer system
Define: Online fraud/ identity theft
the act of deceiving someone to take advantage of them. catfishing as the person to buy goods
Define: solid state storage
devices that have no moving parts that are more robust
Define: linear navigation
screens are shown in a sequence, one after the other like a PowerPoint
name 4 validation checks
presence, restricted choice, length and range
Define: hierarchical navigation
there is a main page and all the topics are grouped
larger files take
longer time to download and display
example of restricted choice
U, PG, 12, 12A, 15, 18 only
pro and con of wireless
pro- no trailing wires con- less secure and more subject to interference
which storage device has the slowest read/write speed?
CD 7.2MB/s
[use, compressibility, lossy/lossless & size] .bmp
[use, compressibility, lossy/lossless & size] images, no, lossless, very large
Define: database
a structured set of data held in tables
2 5 8 19 34 is in what order
asc
examples of magnetic storage (2)
magnetic tape hard disc drive
what 2 things are illegal because of the computer misuse act
Unauthorised access like hacking. Unauthorised modification, changing data without permission or infecting a computer with a virus deliberately.
Define: client side scripting
processing is done on the user’s computer adding interactivity
Define: compound primary key
a primary key that may have 2 or more parts
databaSeS are good at?
Searching - for a particular record (maybe using AND, OR, NOT operators) Sorting - on a field (ascending or descending)