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:: C ::

A cache temporarily stores web pages you have visited in your computer. A copy of documents you retrieve is stored in cache. When you use GO, BACK, or any other means to revisit a document, your browser first checks to see if it is in cache and will retrieve it from there because it is much faster than retrieving it from the server. If memory allocated to cache in your computer becomes full, the browser discards older documents.

You can change the size of cache, although larger cache may affect other operations and is limited by the amount of memory on your computer.

Local storage of remote data designed to reduce network transfers.

Cascading Style Sheets
CSS A mechanism that allows authors and readers to attach the same style (e.g. fonts, colors and spacing) to multiple HTML documents. The CSS language is human readable and writeable, and expresses style in common desktop publishing terminology. One of the fundamental features of CSS is that style sheets cascade; authors can attach a preferred style sheet, while the reader may have a personal style sheet to adjust for human or technological handicaps.

Case Sensative
Capital letters (upper case) retrieve only upper case. Most search tools are not case sensitive or only respond to initial capitals, as in proper names. It is always safe to key all lower case (no capitals), because lower case will always retrieve upper case.

Common Gateway Interface :: the most common way Web programs interact dynamically with users. Many search boxes and other applications that result in a page with content tailored to the user's search terms rely on CGI to process the data once it's submitted, to pass it to a background program in JAVA, JAVASCRIPT, or another programming language, and then to integrate the response into a display using HTML.

CGI-BIN Script
CGI Binary script; a server-side program that accomplishes a task that cannot be done using HTML. A means of extending the usefulness and versatility of the Web enabling the display of dynamic content.

An application or computer that receives and interprets data sent by a matching server computer/application.

Two computer systems linked by a network or modem connection where the client computer uses resources by sending requests to the server computer.

Client-side Imagemaps
A graphic with sub-areas that are linked to different URLs. The MAP that relates parts of the image to different URLs is stored in the current file. This saves a round trip to the server, and should display pages faster. Destination URLs can be displayed in the browser status line as the mouse selects portions of the imagemap.

A message from a WEB SERVER computer, sent to and stored by your browser on your computer. When your computer consults the originating server computer, the cookie is sent back to the server, allowing it to respond to you according to the cookie's contents. The main use for cookies is to provide customized Web pages according to a profile of your interests. When you log onto a "customize" type of invitation on a Web page and fill in your name and other information, this may result in a cookie on your computer which that Web page will access to appear to "know" you and provide what you want. If you fill out these forms, you may also receive e-mail and other solicitation independent of cookies.

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:: D ::

A database is a collection of information stored oftentimes in a computerized format. A web browser can access a public database by Perl scripts. There are many ways for a user to find information in a database. Examples: library catalogs, search engines, financial data, etc.

The look, feel, and structure of a web site. It is the the synergy and synthesis of three aspects: sensory, conceptual, and reactive.

Dial-up service
A common method of connecting to the Internet. A user's modem dials up to a service provider, through which an Internet connection is established.

Abbreviation for Domain Name System. A distributed client-server database system which links domain names with their numerical IP adresses.

Domain Name Server entry :: frequently appears a browser error message when you try to enter a URL. It refers to the initial part of a URL, down to the first /, where the domain and name of the host or SERVER computer are listed (most often in reversed order, name first, then domain). This is translated in huge tables standardized across the Internet into a numeric IP address unique the host computer sought. These tables are maintained on computers called "Domain Name Servers." Whenever you ask the browser to find a URL, the browser must consult the table on the domain name server that particular computer is networked to consult. If this look-up fails for any reason, the "lacks DNS entry" error occurs. The most common remedy is simply to try the URL again, when the domain name server is less busy, and it will find the entry (the corresponding numeric IP address). For more information, see "All About Domain Names."

Hierarchical scheme for indicating logical and sometimes geographical venue of a web-page from the network. In the US, common domains are .edu (education), .gov (government agency), .net (network related), .com (commercial), .org (non-profit and research organizations). Outside the US, domains indicate country: ca (Canada), uk (United Kingdom), au (Australia), jp (Japan), fr (France), etc. Neither of these lists is exhaustive. See also DNS entry. To find out who might own or be behind a domain, do a domaine look-up here by doing a domaine name search.

Domain name
The name of a computer or server on the Internet in the form of a string of names or numbers, separated by periods.


A domain name locates an organization or other entity on the Internet and must be registered by an organization or entity.

For example the domaine name is located at an Internet address at Internet point and a particular host server named "www". The "com" part of the domain name reflects the purpose of the organization (in this example, .com = "commercial") and is called the top-level domain name. The "adeptmultimedia" part of the domain name defines the organization or entity and together with the top-level is called the second-level domain name. The second-level domain name maps to and can be thought of as the "readable" version of the Internet address.

A third level can be defined to identify a particular host server at the Internet address. In our example, "www" is the name of the server that handles Internet requests. (A second server might be called "www2".) A third level of domain name is not required. For example, the fully-qualified domain name could have been "" and the server assumed.

The transfer a file or files from a remote computer to the user's computer.

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 (the consumer) and telephone companies.

Dynamic HTML - DHTML
Allows a Web page to change after it's loaded into the browser --there doesn't have to be any communication with the Web server for an update. You can think of it as 'animated' HTML.

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