EA
extended attribute. Special-purpose data associated with a file. Contrast with extended file attribute.
EBCDIC
Extended Binary-Coded Decimal Interchange Code. One of two coding schemes (standard formats) used by IBM mainframes and minicomputers for representing characters with numbers. The other standard is ASCII.
eBusiness
The process of doing business over the Internet.
ECB
event control block. A structure that controls events related to the transmission and reception of IPX™ and SPX™ packets. ECBs also control the establishment and termination of SPX sessions.
effective class
An NDS class that can be used to create an object in the Directory tree. See also noneffective class.
effective privileges
See effective rights.
effective rights
The rights that an object can exercise to see or modify a particular directory, file, or object. Effective rights are a combination of inherited rights, explicitly grated right, and security equivalences. An object’s effective rights to a directory, file, or object are calculated by the system each time that object attempts an action.
EISA
Extended Industry Standard Architecture. A bus standard, compatible with the earlier ISA, developed by a consortium or nine computer-industry companies.
element
A generic term for any entity that can be considered a standalone item in a broader context, such as an item in a list or a control in a window.
A communications service for computer users by which they can send messages and files to each other on network or telephone lines.
enabling
See internationalization.
encrypt
To translate data into a secret code to prevent an intruder from viewing or copying it.
encryption
The scrambling of data into a secret code that prevents an intruder from viewing or copying it.
EOF
end of file.
Ethernet
A high-speed LAN hardware standard that consists of a cable technology and a series of communication protocols. Ethernet uses a bus topology (configuration) and relies on the CSMA/CD access method. It is the primary communications circuitry used in many mainframe, PC, and UNIX networks.
event
A signal that a specific process is about to occur or has occurred. For example, the EVENT_DOWN_SERVER is generated when the server is brought down. Callback routines can be written to run when this event occurs (before the server shuts down).
event control block
ECB. A structure that controls events related to the transmission and reception of IPX and SPX packets. ECBs also control the establishment and termination of SPX sessions.
exactly-once transaction
XO transaction. A transaction method that ensures that a request is implemented only once.
executable
A program that can be run by a computer. Executable programs can have extensions such as .exe, .com, or .nlm.
execution thread
See thread.
expanded memory
Memory that lies outside the normal DOS address space but that can be made addressable in 16 KB units, called pages, through an area called a page frame. Expanded memory is available for 8086, 8088, and 80286 systems through expanded memory specification (EMS) compliant memory boards, or for 80386 and 80486 systems through EMS emulators. Expanded memory is mainly designed to store data and certain numbers.
explicit transaction tracking
A feature that requires applications to make TTS™ calls, and allows applications to neatly bracket file update sequences with locking and TTS calls. Explicit transaction tracking allows applications to determine precisely when updates within the transaction are written to disk. See also implicit transaction tracking.
export
To make a symbol (function) in one program available to other programs.
extended attribute
EA. Special-purpose data associated with a file. Contrast with extended file attribute.
extended file attribute
One of additional attributes defined for files in NetWare versions 3.x and above. An example of an extended file attribute is the transaction bit (used by TTS). See also File Attributes and Extended File Attributes (NDK: Multiple and Inter-File Services). Contrast with extended attribute.
Extensible Markup Language
XML. A metalanguage containing a set of rules for construction other markup languages. See also W3C's XML page.