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Unformatted text preview: rs. A distributed database management system functions in such
a manner that the multiple distributed databases managed by it appear as a single
centralized database to the end users.
Distributed operating system: An operating system for a distributed computing
system in which the users view the system as a "virtual uniprocessor."
Documentation: Documentation of a software system involves collecting,
organizing, storing, and otherwise maintaining a complete historical record of
programs and other documents used or prepared during the different phases of the
Domain name: In a network environment, the name/address given to a computer,
which uniquely identifies it.
Dot-matrix printers: Character printers that form characters and all kinds of
images as a pattern of dots.
Dots Per Inch (DPI): A measurement of the quality for printed output. It refers to
the number of dots that can be printed per linear inch, horizontally or vertically.
Downloading: Moving a file from a remote computer to ones own computer in a
Downtime: The period during which a computer is malfunctioning or not
operating correctly due to machine failures.
Drilling down: The process of viewing information from a higher level (in the
hierarchy) to a more detailed view of information.
Drum printers: Line printers that print characters by striking a set of hammers on
an inked ribbon and paper placed against a solid cylindrical drum with characters
embossed on its surface in the form of circular bands.
Dual bus architecture: An interconnection architecture in which there are separate
set of buses for interconnecting the CPU with memory and with I/O devices. Dumb terminal: A terminal that has no local processing capability.
Dynamic Data Exchange (DDE): A technique for linking applications that allows
a user to move data from one application into another, such as from a spreadsheet
into a word-processor. Changes made in one application are automatically
reflected in linked applications.
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- Spring '14