|
To our Free Newsletter |
News Feed
|
| |
D
Glossary of Internet Terms and Phrases
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.
People or computers can find patterns in data to perceive information, and
information can be used to enhance knowledge. Since knowledge is
prerequisite to wisdom, we always want more data and information. But, as
modern societies verge on information overload, we especially need better
ways to find patterns.
Source: Dictionary.com
Database Management System (DBMS)
- A
software system that facilitates the creation and maintenance and use of
an electronic
database.
Source: Dictionary.com
Database
- One or more large structured sets of persistent
data, usually associated with
software to update and query the data. A simple database might be a
single file containing many records, each of which contains the same set of
fields where each field is a certain fixed width.
A database is one component of a
database management system.
Source: Dictionary.com
Dial Up
- A temporary, as opposed to dedicated, connection between machines
established over a telephone line using
modems.
Source: Dictionary.com
-
Digital Asset Management
- A system that creates a centralized repository for digital files that
allows the content to be archived, searched and retrieved. The digital
content is stored in
databases called asset repositories while metada such as photo captions,
article key words, advertiser names, contact names, file names or
low-resolution thumbnail images are stored in separate databases called
media catalogs and point to the original items. Digital asset management
also is known as enterprise digital asset management, media asset management
or digital asset warehousing.
Source: IntranetJournal.com
Digital Certificate
- A digital certificate is an electronic "credit card" that establishes
your credentials when doing business or other transactions on the Web. It is
issued by a
certification authority (CA). It contains your name, a serial number,
expiration dates, a copy of the certificate holder's public key (used for
encrypting messages and digital signatures), and the digital signature
of the certificate-issuing authority so that a recipient can verify that the
certificate is real. Some digital certificates conform to a standard, X.509.
Digital certificates can be kept in registries so that authenticating users
can look up other users' public keys.
Source: Whatis.com
Digital Rights Management
- A system for protecting the copyrights of
data circulated via the
Internet by enabling secure distribution and/or disabling illegal
distribution of the data. Typically, a DRM system protects intellectual
property by either
encrypting the data so that it can only be accessed by authorized users
or marking the content with a digital watermark or similar method so that
the content can not be freely distributed.
Source: IntranetJournal.com
DNS (Domain Name System)
- A general-purpose distributed, replicated, data query service chiefly
used on
Internet for translating hostnames into Internet addresses. Also, the
style of hostname used on the Internet, though such a name is properly
called a fully qualified domain name. DNS can be configured to use a
sequence of name servers, based on the domains in the name being looked for,
until a match is found.
The name resolution client (e.g.
Unix's
gethostbyname() library function) can be configured to search for host
information in the following order: first in the local /etc/hosts file,
second in NIS and third in DNS. This sequencing of Naming Services is
sometimes called "name service switching". Under Solaris is configured in
the file /etc/nsswitch.conf.
DNS can be queried interactively using the command nslookup. It is defined
in STD 13, RFC 1034, RFC 1035, RFC 1591.
BIND is a common DNS server.
Source: Dictionary.com
Document Management
- Traditionally, document management is a term used to manage internal
documents and making the them easier to share within an organization. It
differs from traditional Web content because the content is not published on
the Web for all to see.
Source: IntranetJournal.com
See also:
Content Management
Domain Name
- A series of alphanumeric strings separated by periods, such as
www.hmco.com, that is an address of a computer network connection and that
identifies the owner of the address.
Source: Dictionary.com
Doorway Pages
- A
webpage designed to rank well on a specific
search engine for a specific keyword phrase. These pages usually rely on
frequent repetition of the keyword phrase, and often try to "trick" search
engines into ranking them well.
Downloading
- To transfer (data
or
programs) from a
server or
host computer to one's own computer or device.
Source: Dictionary.com
DSL (Digital Subscriber Line)
- A family of digital telecommunications
protocols designed to allow high speed data communication over the
existing copper telephone lines between end-users and telephone companies.
When two conventional
modems
are connected through the telephone system (PSTN), it treats the
communication the same as voice conversations. This has the advantage that
there is no investment required from the telephone company (telco) but the
disadvantage is that the
bandwidth available for the communication is the same as that available
for voice conversations, usually 64 kb/s (DS0) at most. The twisted-pair
copper cables into individual homes or offices can usually carry
significantly more than 64 kb/s but the telco needs to handle the signal as
digital rather than analog.
There are many implementation of the basic scheme, differing in the
communication protocol used and providing varying service levels. The
throughput of the communication can be anything from about 128 kb/s to over
8 Mb/s, the communication can be either symmetric or asymmetric (i.e. the
available bandwidth may or may not be the same upstream and downstream).
Equipment prices and service fees also vary considerably.
The first technology based on DSL was ISDN, although ISDN is not often
recognized as such nowadays. Since then a large number of other protocols
have been developed, collectively referred to as xDSL, including HDSL, SDSL,
ADSL,
and VDSL. As yet none of these have reached very wide deployment but wider
deployment is expected for 1998-1999.
Source: Dictionary.com
DSL (Digital Subscriber Line)
- A family of digital telecommunications
protocols designed to allow high speed data communication over the
existing copper telephone lines between end-users and telephone companies.
When two conventional
modems are connected through the telephone system (PSTN), it treats the
communication the same as voice conversations. This has the advantage that
there is no investment required from the telephone company (telco) but the
disadvantage is that the
bandwidth available for the communication is the same as that available
for voice conversations, usually 64 kb/s (DS0) at most. The twisted-pair
copper cables into individual homes or offices can usually carry
significantly more than 64 kb/s but the telco needs to handle the signal as
digital rather than analog.
There are many implementation of the basic scheme, differing in the
communication protocol used and providing varying service levels. The
throughput of the communication can be anything from about 128 kb/s to over
8 Mb/s, the communication can be either symmetric or asymmetric (i.e. the
available bandwidth may or may not be the same upstream and downstream).
Equipment prices and service fees also vary considerably.
The first technology based on DSL was ISDN, although ISDN is not often
recognized as such nowadays. Since then a large number of other protocols
have been developed, collectively referred to as xDSL, including HDSL, SDSL,
ADSL, and VDSL. As yet none of these have reached very wide deployment
but wider deployment is expected for 1998-1999.
Source: Dictionary.com
Dynamic HTML (DHTML)
- An extension of
HTML giving greater control over the layout of page elements and the
ability to have
web pages which change and interact with the user without having to
communicate with the
server.
DHTML was created by Microsoft can be viewed in Internet Explorer 4.0 and
Netscape Communicator 4.0 but, as usual, Microsoft and Netscape disagree on
how DHTML should be implemented. The Document Object Model Group of the
World Wide Web Consortium
is developing standards for DHTML.
Source: Dictionary.com
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z
|
Contact:
|
|
Light Speed Networks - Custom Web Site
Design Services
Tel. 1-925-952-9110 | Fax. 1-866-931-5531 | Sales@luxceleritas.net
|
|
