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[′dad·ə, ′dād·ə, or ′däd·ə]
(computer science)
General term for numbers, letters, symbols, and analog quantities that serve as input for computer processing.
Any representations of characters or analog quantities to which meaning, if not information, may be assigned.
(science and technology)
Numerical or qualitative values derived from scientific experiments.


(data, data processing, jargon)
/day't*/ (Or "raw data") Numbers, characters, images, or other method of recording, in a form which can be assessed by a human or (especially) input into a computer, stored and processed there, or transmitted on some digital channel. Computers nearly always represent data in binary.

Data on its own has no meaning, only when interpreted by some kind of data processing system does it take on meaning and become information.

For example, the binary data 01110101 might represent the integer 117 or the ASCII lower case U character or the blue component of a pixel in some video. Which of these it represents is determined by the way it is processed (added, printed, displayed, etc.). Even these numbers, characters or pixels however are still not really information until their context is known, e.g. my bank balance is ?117, there are two Us in "vacuum", you have blue eyes.


(1) Technically, raw facts and figures, such as orders and payments, which are processed into information, such as balance due and quantity on hand. However, in common usage, the terms "data" and "information" are used synonymously. In addition, the term data is really the plural of "datum," which is one item of data. But datum is rarely used, and data is used as both singular and plural in practice.

The amount of data versus information kept in the computer is a tradeoff. Data can be processed into different forms of information, but it takes time to sort and sum transactions. Up-to-date information can provide instant answers.

A common misconception is that software is also data. Software is executed, or run, by the computer. Data are "processed." Thus, software causes the computer to process data.

(2) Any form of information whether on paper or in electronic form. Data may refer to any electronic file no matter what the format: database data, text, images, audio and video. Everything read and written by the computer can be considered data except for instructions in a program that are executed (software).

(3) May refer only to data stored in a database in contrast with text in a word processing document.
References in periodicals archive ?
If passive data are worth hundreds of billions of dollars when sold by third parties, the data that individuals choose to share -- reliable, honest insights into their motivations as consumers -- should be worth much more.
The passive data for joint active-passive analyses have the same substitutions as in the separate analyses, so effects involving sentence voice (comparing the active versus passive RTs) must be viewed with caution.
BackOffice Associates Founder and Chief Technology Officer, Thomas Kennedy, will present a Partner Session titled "Active and Passive Data Governance - A Detailed Look at the Two Methods," on Wed.
Next-Generation Data Leakage Prevention Solution Delivers Native Passive Data Discovery, IBM SiteProtector(R) Integration, and Powerful Reporting Tools
This "flight across the value chain" shows how passive data becomes intelligent information used to increase revenue, improve visibility and to ensure management objectives are consistently met.
Distributions, cables, installation equipment, lighting fixtures, passive data network, satellite system, lightning protection, intercom.
the leader in access solutions for monitoring high-speed optical and copper networks, is showcasing its products for passive data capture at NXTcomm 2008, June 16-19 in Las Vegas.
Reva's TAP appliance provides a powerful and scalable means of providing consistent and high-quality Passive data, and we're pleased to work with them on integrating this data into our application to benefit customers.
Public record information is passive data," he explains, "an investor can find out that a homeowner is headed for foreclosure, but the investor doesn't know if the homeowner has already left the house or if they even are interested in their services.
Scope of Service9 St dismantling Etagen-/Unterverteilung300 St dismantling Lighting800 St dismantling switching and connection devices, data outlets12,000 m disassembly line network8 St Electric Etagen-/Unterverteilung850 St switching and connection devices18,000 m powerline network7,000 m Low power line network8,000 m data network management network350 St Lighting300 St KNX actuators / sensors with KNX function parameterization1 St passive data network 250 St.
Kevin Dick, CEO of Network Resonance, explained, "There's tremendous demand from enterprises for passive data acquisition.
Going beyond the passive data gathering and single function tools of typical survey solutions, Vovici addresses the entire continuum of feedback needs - from conducting basic surveys to fully integrated solutions that drive business vision.

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