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quasi-language
a derogatory term for any programming language that, because of deficiencies, is not suitable for any serious work
query
a request for information from a database
quick-and-dirty
a technique where something is done fast and sloppily, usually due to time constraints, pressure, testing purposes, or because the task was not considered important, the term commonly refers to software programming, where a feature or program is designed and written in a short amount of time, may contain errors and is usually hard to maintain
quicksort
an efficient sorting algorithm serving as a systematic method for placing the elements of an array in order
radio button
one of a set of mutually exclusive options in a dialog box, i.e the user can only select one, causing the others to be deselected
radio frequency
a rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals
radio frequency identification
a system for finding the position of a product using radio signals, it can be used to check where a product is in the supply chain
RAID level
particular arrangement of RAID array disks, usually given a number with higher numbers indicating more elaborate methods for ensuring a computer can recover from hardware errors, the best known are RAID 0 to RAID 5
rainbow table
a listing of all possible plaintext permutations of encrypted passwords specific to a given hash algorithm
random acces memory
a type of memory that can be accesses in any order, the main electronic memory of a personal computer and is used for storing the programs and data being used
Ranish Partition Manager
a freeware hard disk partition editor, disk cloning tool, and boot manager, that gives a high level of control for creating multi-boot systems, available on the freeware live cd SystemRescueCD and the Ultimate Boot CD (not the Windows version), running under MS DOS or Free DOS
ransomware
a class of malware which restricts access to the computer system that it infects, and demands a ransom paid to the creator of the malware in order for the restriction to be removed
raw data
data that has not been processed
RDBMS
a database system that links files together as required
Read Only Memory
computer memory that can permanently store data and applications within it
real-time
the immediate proccesing of computer data enabling interactive applications
reboot
to restart a computer operating system
record
a section of a database made up of related database fields; an item of data consisting of a number of characters or bytes to form a number, a name, or an address
recorder
a computer program that allows the user to create their own audio CDs with a writeable CD-ROM drive
Recycle Bin
the folder in Microsoft Windows operating systems where deleted files are stored
refactoring
a set of programming techniques used to improve clearness and readability of the source code; can be implemented ad-hoc, but is highly recommended as one of the final stages in production phase
registry
a hierarchical database that stores configuration settings and options on operating system; it contains settings for low-level operating system components as well as the applications running on the platform
reinstall
install (computer software) again, usually to solve a technical problem
relation
a data structure which consists of a set of records with identical internal structure associated with the connections between data
reliable stream service
a data management system provided by the TCP protocol to ensure that data is transferred across a network correctly, it structures and buffers the data flow looks for responses, and takes action to replace missing data blocks
repeater
a network device used to regenerate or replicate a signal
repetitive strain injury
a painful medical condition which can cause damage to the hands, wrists, upper arms and backs especially of people who use computers and other forms of keyboard
resident
kept in the computer’s memory
resident virus
a kind of computer virus that hides and stores itself within the computer memory, allowing it to infect any file that is run by the computer
resistor
an electronic component that reduces the flow of current in a circuit
resolution protocol
a set of standards for software used with internal look-up tables in a TCP/IP network for routing data through a gateway between networks
resolution
a measure of the quality of a display screen in terms of the amount of graphical information that can be shown on the screen, partly depending on the number of dots that make up the image
responsive web design
an approach to web page creation that makes use of flexible layouts, flexible images and cascading style sheet media queries, its goal is to build web pages that detect the visitor’s screen size and orientation and change the layout accordingly
restore
to put data back into its original location
retouch
an extra part which is added, especially to an officially organized plan, system, agreement, etc.
return
expression in programing which terminates the execution of a program, procedure or function, and gives back the result value of the program, procedure or function
reverse engineering
taking an object apart to discover how it was originally designed and put together
revision control system
a control system that automates the storing, retrieval, logging, identification, and merging of revisions
revolutions per minute
a measure of the frequency of a rotation, annotating the number of full rotations completed in one minute around a fixed axis; it is used as a measure of rotational speed of a mechanical component
RFID
a label that stores information to identify an object and can be read using radio signals
RGB
an additive color model in which three-coloured light is added together in various ways to reproduce a broad array of colors, the name of the model comes from the initials of the three additive primary colors
ring main
the main electrical supply circuit in a building.
ringtone
the sound made by a telephone to indicate an incoming call or text message
rip
to extract songs from a CD and turn them into WAV files
ripper
a program that extracts songs from a CD and turns them into WAV files
roaming
a general term referring to the extension of connectivity service in a location that is different from the home location where the service was registered
rocket science
something requiring great intelligence or technical ability
rollout
the implementation, introduction, of a new product, service, or policy to the public
route
to move data from node to node on a network
router
an electronic device that links different networks or parts of a network; it determines the path that a signal should take to reach its destination
routing table
a data table stored in a router or a networked computer that lists the routes to particular network destinations, and in some cases, distances associated with those routes
RPM
originally developed by Ethan Cohen at Red Hat for Red Hat Linux, it is now used by many GNU/Linux distributions it has also been ported to some other operating systems, such as Novell NetWare (as of version 6.5 SP3) and IBMs AIX as of version 4; it typically contains the compiled version of the software
RSA
an algorithm for public-key cryptography that is based on the presumed difficulty of factoring large integers
RTS
modification of strategy video games based on turns where player’s actions and decisions are visible immediately
rule
the name given to patterns found in data when using neural networks