Database ———— A database is a highly structured file (or set of files) that tries to provide all the information assigned to a particular subject and to allow programs to access only items they need. Online services offer databases that users can search to find full-text or bibliographic references to desired topics.
DCE/DTE ———- Data Communications Equipment/Data Terminal Equipment. Equipment connected to an RS232 connector must be either a DCE (like a modem or a printer) or a DTE (computer or terminal). The term defines the types of equipment that will "talk" and "listen."
Default ———- When a value, parameter, attribute, or option is assigned by a communications program, modem, or online system unless something else is specified, it is called the default. For example, communication programs often have prespecified values for baud rate, bit size and parity that are used unless alternative values are given. These prespecified values are called the defaults. Some services give users a choice between two or more options. If a selection is not made by the user, then a selection is automatically assigned, by default.
Discussion list ———————- See Mailing list.
Domain Name System (DNS) ———————————— Email addressing system used in networks such as Internet and BITNET. The Internet DNS consists of a hierarchical sequence of names, from the most specific to the most general (left to right), separated by dots, for example nic.ddn.mil.
Doors ——- A service offered by many bulletin boards to allow the user to leave the (remote) main software system to use one or several independent programs, like games and databases.
Downloading
—————-
The transfer of data from an online service and "down" to your
computers' disk.
DTR —- Data Terminal Ready is a circuit which, when ON, tells the modem that your computer is ready to communicate. Most modems are unable to tell your computer that a connection has been set up with a remote computer before this circuit has been switched off. If your computer turns this signal OFF, while it is in a dialog with a remote computer, the modem will normally disconnect.
Duplex ——— Describes how you see text entered by the keyboard. When the setting is HALF DUPLEX, all characters entered on your computer for transfer to an online service (or your modem) will be displayed. In addition, you will normally receive an echo from the online service (or modem). The result will often 'bbee lliikkee tthhiiss'. When using the setting FULL DUPLEX, typed characters will not be shown. What you see, are characters echoed back to you from the online service and/or your modem.
ECHO —— (1) When data is being sent, the receiving device often resends the information back so the sending device can be sure it was received correctly. (2) Term used on FidoNet for this network's system of exchanging conferences (parallel conferencing).