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Glossary
 
Web Glossary
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Data Compression

Technique of reducing the amount of storage required to hold a digital file to reduce the disk space the file requires and allow it to be processed or transmitted more quickly.

Database

A special way of organizing computer data. It looks like a table implemented columns and rows for fast accessing data from any of the cells in the table. There are many different types of databases but all of them work on the same principle. Databases are very useful for storing and organizing data for later retrieval. Very often used for managing accounts, managing user information, creating guest books and bulletin boards, even this page (dictionary) is implemented with database.

Directory

A Web site containing links to other sites which are organized into various categories. Examples of directories are Yahoo!, Open Directory, LookSmart, etc. The most well-known directory is Yahoo!. Many people feel that Yahoo! is more important to traffic-building than any single engine. The advantage of the directories is that the Web sites listed are usually of a higher, more uniform quality. They are selected by humans, so it's not as easy to get in as it is for Search Engines.

Discussion Group

A web page that supports interactive discussions by users. Users submit text content using a form, that is saved on the server and that way make it available to other visitors.

DNS

The Domain Name System which identifies each computer as a network point on the Internet using an internet protocol address systems to translate from domain name to IP and reverse.

Domain Name

A network name associated with an organization (e.g., google.com or yahoo.com). Domain names are organized in a hierarchy, with each level separated by a "dot." Common organizational types are commercial (.com), government (.gov), and network (.net). In the U.S., most Internet addresses follow a standard format: name of server.name of organization.type of organization.

Domain Name Extension

Part after the dot in the domain name is a domain name extension. In the abacus.ca domain, domain extension is .ca . There are many other domain name extensions such as .com .net .org .gov .edu .mil .info .web .us .uk .cc .it .mx .ba and many others.

Doorway Page

A Web page which has been specially created in order to get a high ranking in the search engines. Also called gateway page, bridge page, entry page etc.

Downloading

Downloading is the method by which users access and save or "pull down" software or other files to their own computers from a remote computer, usually via a modem.

DPI

Considered as "dots per square inch," a measure of output resolution in relationship to printers, image setters and monitors.

Dynamic Content

Information in Web pages which changes automatically, based on database or user information. Search engines will index dynamic content in the same way as static content unless the URL includes a question mark.