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<h2 id="e">E</h2>
<p>Return to <a href="as4glos.htm#as4glos">Glossary</a>.</p>
<dl>
<dt id="x2026401" class="bold">
<a name="x2026401"></a>EAB</dt>
<dd>See <a href="rzaate.htm#x2026920">Enterprise
Address Book</a>.</dd>
<dt id="x2191934" class="bold">
<a name="x2191934"></a>EAO exception</dt>
<dd>See <a href="rzaate.htm#x2026485">effective address overflow exception</a>.</dd>
<dt id="x2386506" class="bold">
<a name="x2386506"></a>EBCDIC</dt>
<dd>See <a href="rzaate.htm#x2009089">Extended Binary Coded Decimal Interchange Code</a>.</dd>
<dt id="x2026405" class="bold">
<a name="x2026405"></a>EBCDIC character</dt>
<dd>Any one of the symbols
included in the 8-bit EBCDIC set.</dd>
<dt id="x2026410" class="bold">
<a name="x2026410"></a>EBCDIC double-byte encoding scheme</dt>
<dd>A structure that has separate, allocated coding space for control characters
and graphic characters. Control characters do not have 16-bit codes in the
EBCDIC structure definition. Graphic characters have a range from 4141 to
FEFE. The space character is at 4040.</dd>
<dt id="x2026415" class="bold">
<a name="x2026415"></a>EBCDIC single-byte encoding scheme</dt>
<dd>An 8-bit-per-byte structure. The EBCDIC single-byte structure has a valid
code-point range for 00 to FF. Control characters have a range from 00 to
3F. Graphic characters have a range from 41 to FE. The space character is
40.</dd>
<dt id="x2026420" class="bold">
<a name="x2026420"></a>e-business</dt>
<dd>The transaction of business
over an electronic medium such as the Internet.</dd>
<dt id="x2026425" class="bold">
<a name="x2026425"></a>ECMA</dt>
<dd>See <a href="rzaate.htm#x2054444">Ecma
International</a>.</dd>
<dt id="x2054444" class="bold">
<a name="x2054444"></a>Ecma International (ECMA)</dt>
<dd>An international
association that is dedicated to the standardization of information and communication
systems. The ECMA is based in Europe and was founded in 1961.</dd>
<dt id="x2026430" class="bold">
<a name="x2026430"></a>e-commerce</dt>
<dd>The subset of e-business
that involves the exchange of money for goods or services purchased over an
electronic medium such as the Internet.</dd>
<dt id="x2320222" class="bold">
<a name="x2320222"></a>ECS</dt>
<dd>See <a href="rzaate.htm#x2026618">electronic
customer support</a>.</dd>
<dt id="x2026435" class="bold">
<a name="x2026435"></a>EDF</dt>
<dd>See <a href="rzaate.htm#x2199430">execution
diagnostic facility</a>.</dd>
<dt id="x2026439" class="bold">
<a name="x2026439"></a>edge device</dt>
<dd>A functional unit such
as a router or gateway that is deployed at the border of an administrative
domain. An edge device controls traffic through one point only.</dd>
<dt id="x2026444" class="bold">
<a name="x2026444"></a>edit</dt>
<dd>(1) To add, change, delete, rearrange,
or modify the form or format of data.</dd>
<dd>(2) To change a numeric field
for output by suppressing zeros and inserting commas, periods, currency symbols,
the sign status, or other constant information.</dd>
<dt id="x2026455" class="bold">
<a name="x2026455"></a>edit code</dt>
<dd>A letter or number indicating
that editing should be done according to a defined pattern before a field
is displayed or printed. See also <a href="rzaate.htm#x2026480">edit word</a>.</dd>
<dt id="x2026460" class="bold">
<a name="x2026460"></a>edit description</dt>
<dd>A description of
a user-defined edit code. The system-recognized identifier is *EDTD.</dd>
<dt id="x2026465" class="bold">
<a name="x2026465"></a>editing character</dt>
<dd>In COBOL, a single
character or a fixed 2-character combination that punctuates output.</dd>
<dt id="x2026470" class="bold">
<a name="x2026470"></a>edit line</dt>
<dd>In CoOperative Development
Environment/400, a string of characters ended either by an end-of-line character
sequence or by the end of the file.</dd>
<dt id="x2026475" class="bold">
<a name="x2026475"></a>editor program</dt>
<dd>A computer program
designed to perform such functions as rearrangement, modification, and deletion
of data in accordance to prescribed rules (A).</dd>
<dt id="x2026480" class="bold">
<a name="x2026480"></a>edit word</dt>
<dd>A user-defined word with
a specific format that indicates how editing should be done. See also <a href="rzaate.htm#x2026455">edit code</a>.</dd>
<dt id="x2026485" class="bold">
<a name="x2026485"></a>effective address overflow exception (EAO exception)</dt>
<dd>In Performance Tools, a condition in which the Licensed Internal
Code must make address adjustments not made above the machine interface.</dd>
<dt id="x2148401" class="bold">
<a name="x2148401"></a>EIA</dt>
<dd>See <a href="rzaate.htm#x2054117">Electronic
Industries Association</a>.</dd>
<dt id="x2026605" class="bold">
<a name="x2026605"></a>EIA-232</dt>
<dd>In data communications, a
specification of the Electronic Industries Association (EIA) that defines
the interface between data terminal equipment (DTE) and data circuit-terminating
equipment (DCE) using serial binary data interchange.</dd>
<dt id="x2026500" class="bold">
<a name="x2026500"></a>EIA unit</dt>
<dd>A unit of measure, established
by the Electronic Industries Association, equal to 44.45 millimeters (1.75
inches).</dd>
<dt id="x2044048" class="bold">
<a name="x2044048"></a>EIB</dt>
<dd>See <a href="rzaate.htm#x2199420">EXEC
interface block</a>.</dd>
<dt id="x2026610" class="bold">
<a name="x2026610"></a>EJB</dt>
<dd>See <a href="rzaate.htm#x2026930">Enterprise JavaBeans&trade;</a>.</dd>
<dt id="x2082684" class="bold">
<a name="x2082684"></a>electromagnetic compatibility (EMC)</dt>
<dd>The design and test of products to meet legal and corporate specifications
dealing with the emissions and susceptibility to frequencies in the radio
spectrum. Electromagnetic compatibility is the ability of various electronic
equipment to operate properly in the intended electromagnetic environment.</dd>
<dt id="x2140931" class="bold">
<a name="x2140931"></a>electromagnetic interference (EMI)</dt>
<dd>Waves of electromagnetic radiation, including but not limited to radio frequencies,
generated by the flow of electric current.</dd>
<dt id="x2026618" class="bold">
<a name="x2026618"></a>electronic customer support (ECS)</dt>
<dd>A part of the operating system that allows a customer to access the question-and-answer
(Q &amp; A) function; problem analysis, reporting, and management; IBM&reg; product information;
and technical information exchange.</dd>
<dt id="x2026623" class="bold">
<a name="x2026623"></a>electronic document</dt>
<dd>A document that
is stored on the computer, instead of printed on paper.</dd>
<dt id="x2054117" class="bold">
<a name="x2054117"></a>Electronic Industries Association (EIA)</dt>
<dd>An organization of electronics manufacturers that advances the technological
growth of the industry, represents the views of its members, and develops
industry standards.</dd>
<dt id="x2026628" class="bold">
<a name="x2026628"></a>electronic keystick</dt>
<dd>A device that
slides into a slot on some iSeries&trade; system control panels. When the keystick
is in place, it electronically unlocks functions at the key pad on the control
panel. This allows a system operator to select an operating mode. When the
keystick is removed, those functions are electronically locked, which prevents
those without authority from placing the machine in some other mode.</dd>
<dt id="x2026641" class="bold">
<a name="x2026641"></a>electronic overlay</dt>
<dd>An AFP&trade; resource object
that is a collection of predefined data, such as lines, shading, text, boxes,
or logos, that can be merged with variable data on a page while printing.</dd>
<dt id="x2140952" class="bold">
<a name="x2140952"></a>electrostatic discharge (ESD)</dt>
<dd>The
flow of current that results when objects having a static charge come into
close enough proximity to discharge.</dd>
<dt id="x2026646" class="bold">
<a name="x2026646"></a>element</dt>
<dd>(1) In AFP Utilities, the smallest unit that is used
to design an AFP resource.</dd>
<dd>(2) The smallest unit in a table, array, list,
set, or other structure. For example, a value in a list of values; each data
field in an array; each bar or space in a bar code.</dd>
<dt id="x2026663" class="bold">
<a name="x2026663"></a>elementary item</dt>
<dd>In COBOL, a data
item that cannot be further logically subdivided.</dd>
<dt id="x2026668" class="bold">
<a name="x2026668"></a>element mark</dt>
<dd>In AFP Utilities, a
mark that is used to show the position of an element on a display; for example,
'*B005' where B means bar code and 005 is the fifth element. See also <a href="rzaate.htm#x2026673">element name</a>.</dd>
<dt id="x2026673" class="bold">
<a name="x2026673"></a>element name</dt>
<dd>In AFP Utilities, a
name that appears in the image area instead of an element mark. See also <a href="rzaate.htm#x2026668">element mark</a>.</dd>
<dt id="x2026678" class="bold">
<a name="x2026678"></a>ELLC</dt>
<dd>See <a href="rzaate.htm#x2026878">enhanced
logical link control</a>.</dd>
<dt id="x2026682" class="bold">
<a name="x2026682"></a>e-mail</dt>
<dd>Documents and messages that
are transmitted between users over a communication network.</dd>
<dt id="x2026691" class="bold">
<a name="x2026691"></a>embedded blank</dt>
<dd>A space between characters
within a unit of data.</dd>
<dt id="x2026696" class="bold">
<a name="x2026696"></a>embedded command</dt>
<dd>A command enclosed
as a value within another command.</dd>
<dt id="x2109201" class="bold">
<a name="x2109201"></a>embedded SQL</dt>
<dd>An SQL statement that
is coded within an application program.</dd>
<dt id="x2082719" class="bold">
<a name="x2082719"></a>EMC</dt>
<dd>See <a href="rzaate.htm#x2082684">electromagnetic
compatibility</a>.</dd>
<dt id="x2140933" class="bold">
<a name="x2140933"></a>EMI</dt>
<dd>See <a href="rzaate.htm#x2140931">electromagnetic
interference</a>.</dd>
<dt id="x2026704" class="bold">
<a name="x2026704"></a>emitter</dt>
<dd>A program that takes the
output from one system and converts the information into a different form.</dd>
<dt id="x2026713" class="bold">
<a name="x2026713"></a>emphasis</dt>
<dd>Highlighting, color change,
or other visible indication of conditions relative to an object or choice
that affects a user's ability to interact with that object or choice. Emphasis
can also give a user additional information about the state of a choice or
an object.</dd>
<dt id="x2026718" class="bold">
<a name="x2026718"></a>emulation</dt>
<dd>The use of software, hardware,
or both by one system to imitate another system. The imitating system accepts
the same data, runs the same programs, and achieves the same results as the
imitated system.</dd>
<dt id="x2026723" class="bold">
<a name="x2026723"></a>emulation program</dt>
<dd>A control program
that permits functions written for one system or device to be run on another
system or device.</dd>
<dt id="x2026728" class="bold">
<a name="x2026728"></a>Encapsulated Security Payload (ESP)</dt>
<dd>In a virtual private network (VPN), a security protocol that provides data
confidentiality and integrity.</dd>
<dt id="x2026733" class="bold">
<a name="x2026733"></a>encapsulation</dt>
<dd>In object-oriented
programming, the technique that is used to hide the inherent details of an
object, function, or class from client programs. Client programs are only
required to know the interface of a class (the signatures of the methods of
the class and the names of the attributes of the class) to use the methods
and attributes of the class.</dd>
<dt id="x2026738" class="bold">
<a name="x2026738"></a>encoded format</dt>
<dd>In query management,
the format of the data in an externalized form file.</dd>
<dt id="x2026743" class="bold">
<a name="x2026743"></a>encoded-vector index</dt>
<dd>A DB2&reg; UDB for iSeries index that is specialized for quick row selection in query processing.
This type of index also provides accurate database statistics, which can improve
the optimization of queries. See also <a href="rzaatr.htm#x2035729">radix-tree index</a>.</dd>
<dt id="x2001733" class="bold">
<a name="x2001733"></a>encoding scheme</dt>
<dd>(1) The set of rules
that specifies the values for control characters and graphic characters. Examples
of encoding schemes include ASCII, ISO/IEC 10646, Unicode and IBM's EBCDIC.
Encoding schemes are defined by standards organizations.</dd>
<dd>(2) The
underlying part of a code page that defines: a) the coding space (the number
and allowable value of code points in a code page); b) the rules for sharing
the coding space between control and graphic characters; and c) the rules
related to the specific options permitted in that scheme, such as the number
of bits in a byte, single-byte, or double-byte.</dd>
<dt id="x2054203" class="bold">
<a name="x2054203"></a>ENCP</dt>
<dd>See <a href="rzaate.htm#x2079210">end-node
control point</a>.</dd>
<dt id="x2026757" class="bold">
<a name="x2026757"></a>encrypt</dt>
<dd>In Cryptographic Support,
to systematically scramble information so that it cannot be read without knowing
the coding key. See also <a href="rzaatd.htm#x2019886">decrypt</a>.</dd>
<dt id="x2026762" class="bold">
<a name="x2026762"></a>encryption</dt>
<dd>In computer security,
the process of transforming data into an unintelligible form in such a way
that the original data either cannot be obtained or can be obtained only by
using a decryption process.</dd>
<dt id="x2026767" class="bold">
<a name="x2026767"></a>encryption algorithm</dt>
<dd>An algorithm
that scrambles the data so that it becomes unreadable to someone who intercepts
it.</dd>
<dt id="x2026782" class="bold">
<a name="x2026782"></a>ending attribute character</dt>
<dd>For a
display file, the character following the last position in a field.</dd>
<dt id="x2001738" class="bold">
<a name="x2001738"></a>end node</dt>
<dd>In SNA, a node in an APPN
network that can be a source or target node, but does not provide any routing
or session services to any other node.</dd>
<dt id="x2079210" class="bold">
<a name="x2079210"></a>end-node control point (ENCP)</dt>
<dd>A control
point that provides its own configuration, session, and management services
with assistance from the control point in its serving network node. An ENCP
is capable of engaging in CP-CP sessions with other nodes.</dd>
<dt id="x2026790" class="bold">
<a name="x2026790"></a>end-of-file delay</dt>
<dd>An interval during
which the system holds a file open after the normal end of the file is reached
until one or more records are updated or added to the end of the file. The
length of the interval can be specified on the EOFDLY parameter.</dd>
<dt id="x2026795" class="bold">
<a name="x2026795"></a>End of Procedure Division</dt>
<dd>In COBOL,
the physical position of a COBOL source program after which no further procedures
appear.</dd>
<dt id="x2026800" class="bold">
<a name="x2026800"></a>end-of-tape marker (EOT marker)</dt>
<dd>A reflective material placed on a magnetic tape to indicate the end of the
recording area.</dd>
<dt id="x2026805" class="bold">
<a name="x2026805"></a>end-of-text character (ETX character)</dt>
<dd>The BSC transmission control character used to end a logical set of
records that began with the start-of-text character. See also <a href="rzaate.htm#x2026810">end-of-transmission-block character</a>.</dd>
<dt id="x2026810" class="bold">
<a name="x2026810"></a>end-of-transmission-block character (ETB character)</dt>
<dd>The BSC transmission control character used to end a block of
records. See also <a href="rzaate.htm#x2026805">end-of-text character</a>.</dd>
<dt id="x2026815" class="bold">
<a name="x2026815"></a>end-of-transmission character (EOT character)</dt>
<dd>A transmission control character used to indicate the conclusion
of a transmission that may have included one or more texts and any associated
message headings.</dd>
<dt id="x2026820" class="bold">
<a name="x2026820"></a>endpoint</dt>
<dd>(1) A host or gateway that comprises
part of a virtual private network (VPN) connection. A VPN includes two endpoints
and a security policy.</dd>
<dd>(2) The system that is the origin or destination
of a session.</dd>
<dt id="x2026836" class="bold">
<a name="x2026836"></a>endpoint system</dt>
<dd>Any system that is
running i5/OS&trade; and is connected to the central system. An endpoint system is defined
from the central system for the purpose of performing iSeries Navigator
functions.</dd>
<dt id="x2026846" class="bold">
<a name="x2026846"></a>end program header</dt>
<dd>In COBOL, a combination
of words, followed by a separator period, that indicates the end of a COBOL
source program. The end program header is: END PROGRAM program-name.</dd>
<dt id="x2026851" class="bold">
<a name="x2026851"></a>end system</dt>
<dd>(1) The last system in a chain
of systems that are linked by any combination of TELNET and pass-through requests.</dd>
<dd>(2) See <a href="rzaatd.htm#x2020233">destination node</a>.</dd>
<dt id="x2026859" class="bold">
<a name="x2026859"></a>end-to-end connection type</dt>
<dd>In OSI,
the type of network service connection used between the local and destination
node, that is connection mode, connectionless mode, or both.</dd>
<dt id="x2026869" class="bold">
<a name="x2026869"></a>eNetwork</dt>
<dd>See <a href="rzaati.htm#x2024753">IBM eNetwork
Software</a>.</dd>
<dt id="x2026873" class="bold">
<a name="x2026873"></a>enforced subset match conversion/substitution</dt>
<dd>A conversion where the characters that exist in both the source
coded character set identifier (CCSID) and the target CCSID have their integrity
maintained. Characters that are not included in the target CCSID are presented
to the user as substitution characters. This substitution is permanent. Any
loss of character integrity is permanent. An EBCDIC-encoded character that
is in the source CCSID but not in the target CCSID is replaced with 3F.</dd>
<dt id="x2026888" class="bold">
<a name="x2026888"></a>Enhanced 5250 Emulation</dt>
<dd>A program
that allows a personal computer and a printer to be attached to an iSeries server and
perform the functions of one or two 5250 workstations on one twinaxial cable.
The workstations can be one display station, two display stations, or one
display station and one printer.</dd>
<dt id="x2026878" class="bold">
<a name="x2026878"></a>enhanced logical link control (ELLC)</dt>
<dd>An X.25 protocol that allows the transfer of data link control information
between two adjoining SNA nodes that are connected through an X.25 packet-switching
data network. ELLC enhances error detection and recovery. See also <a href="rzaatp.htm#x2033705">physical services header</a>, <a href="rzaatq.htm#x2035555">qualified logical link
control</a>.</dd>
<dt id="x2026883" class="bold">
<a name="x2026883"></a>enhanced NWS</dt>
<dd>A character-based 5250
workstation with an enhanced character set that allows the presentation of
characters that look like graphical symbols.</dd>
<dt id="x2191942" class="bold">
<a name="x2191942"></a>ENQ character</dt>
<dd>See <a href="rzaate.htm#x2026905">enquiry character</a>.</dd>
<dt id="x2026897" class="bold">
<a name="x2026897"></a>enqueue</dt>
<dd>To place items in a queue.
See also <a href="rzaatd.htm#x2020132">dequeue</a>.</dd>
<dt id="x2026905" class="bold">
<a name="x2026905"></a>enquiry character (ENQ character)</dt>
<dd>The BSC transmission control character usually used to request a response
from the remote system or device.</dd>
<dt id="x2026910" class="bold">
<a name="x2026910"></a>enroll</dt>
<dd>In Backup Recovery and Media
Services, to identify media to Backup Recovery and Media Services. Media initialized
in Backup Recovery and Media Services does not need to be enrolled.</dd>
<dt id="x2026915" class="bold">
<a name="x2026915"></a>enterprise</dt>
<dd>The entire business organization
under discussion. An enterprise may consist of one or more establishments,
divisions, plants, warehouses, and so on that require an information system.</dd>
<dt id="x2026920" class="bold">
<a name="x2026920"></a>Enterprise Address Book (EAB)</dt>
<dd>A collection
of information about people, departments, and locations in an enterprise.
Information about people may include telephone numbers, mailing addresses,
and the department in which a person works. Department information may include
the department name, the manager, and the department name the department reports
to. Location information may contain a mailing address. On the iSeries server, the
EAB is the system distribution directory.</dd>
<dt id="x2026925" class="bold">
<a name="x2026925"></a>enterprise information system</dt>
<dd>In
System Manager, all the resources that the applications manage and the functions
for managing them.</dd>
<dt id="x2026930" class="bold">
<a name="x2026930"></a>Enterprise JavaBeans (EJB)</dt>
<dd>A component
architecture defined by Sun Microsystems for the development and deployment
of object-oriented, distributed, enterprise-level applications.</dd>
<dt id="x2026945" class="bold">
<a name="x2026945"></a>entity</dt>
<dd>In OSI, the representation
of a layer on a given open system.</dd>
<dt id="x2026961" class="bold">
<a name="x2026961"></a>entropy</dt>
<dd>The minimum number of bits
needed to represent the information that is contained in a message.</dd>
<dt id="x2026966" class="bold">
<a name="x2026966"></a>entry</dt>
<dd>In COBOL, any descriptive set
of consecutive clauses stopped by a separator period and written in the Identification
Division, Environment Division, or Data Division of a COBOL program.</dd>
<dt id="x2026974" class="bold">
<a name="x2026974"></a>entry field</dt>
<dd>An area on a display
where a user can enter information, unless the field is read-only. The boundaries
of an entry field are usually indicated.</dd>
<dt id="x2026979" class="bold">
<a name="x2026979"></a>entry format</dt>
<dd>The description of a
personal directory entry. Each personal directory entry has an identical structure.
The entry structure determines the type and size of each field in a personal
directory entry.</dd>
<dt id="x2026984" class="bold">
<a name="x2026984"></a>entry point (EP)</dt>
<dd>The address or label
of the first instruction processed or entered in a program, routine, or subroutine.
A program, routine, or subroutine can have a number of different entry points,
each corresponding to a different function or purpose.</dd>
<dt id="x2026994" class="bold">
<a name="x2026994"></a>enumeration data type</dt>
<dd>In the Fortran,
C, and C++ language, a data type that represents a set of values that a user
defines.</dd>
<dt id="x2026999" class="bold">
<a name="x2026999"></a>envelope</dt>
<dd>A string of data representing
information about a message aside from the attachments and its recipients.</dd>
<dt id="x2027007" class="bold">
<a name="x2027007"></a>envelope type</dt>
<dd>A value used to define
the format and contents of an envelope, so that the programs that work with
specific types of envelopes are supported. The envelope types supported on
a system are defined when the mail server framework is configured. The value
associated with an envelope type must be a unique type value.</dd>
<dt id="x2027012" class="bold">
<a name="x2027012"></a>environment clause</dt>
<dd>In COBOL, a clause
that appears as part of an Environment Division entry.</dd>
<dt id="x2027017" class="bold">
<a name="x2027017"></a>Environment Division</dt>
<dd>One of the four
main parts of a COBOL program. The Environment Division describes the computers
on which the source program is compiled and those on which the object program
is run; it also provides a connection between the logical concept of files
and their records, and the physical characteristics of the devices on which
files are stored.</dd>
<dt id="x2027022" class="bold">
<a name="x2027022"></a>environment variable</dt>
<dd>A variable that
specifies the operating environment for a process. For example, environment
variables can describe the home directory, the command search path, the terminal
in use, and the current time zone.</dd>
<dt id="x2187605" class="bold">
<a name="x2187605"></a>EOT character</dt>
<dd>See <a href="rzaate.htm#x2026815">end-of-transmission character</a>.</dd>
<dt id="x2191936" class="bold">
<a name="x2191936"></a>EOT marker</dt>
<dd>See <a href="rzaate.htm#x2026800">end-of-tape marker</a>.</dd>
<dt id="x2027033" class="bold">
<a name="x2027033"></a>EP</dt>
<dd>(1) See <a href="rzaate.htm#x2027061">Error
Protocol</a>.</dd>
<dd>(2) See <a href="rzaate.htm#x2026984">entry point</a>.</dd>
<dt id="x2027051" class="bold">
<a name="x2027051"></a>equate name</dt>
<dd>In Interactive Source
Debugger, a shorter name assigned to a command that is used often. The equate
name, when called, performs the same function as the command.</dd>
<dt id="x2054349" class="bold">
<a name="x2054349"></a>ER</dt>
<dd>See <a href="rzaate.htm#x2027181">exception
response</a>.</dd>
<dt id="x2027056" class="bold">
<a name="x2027056"></a>error log</dt>
<dd>A record of machine checks,
device errors, and media statistics.</dd>
<dt id="x2027061" class="bold">
<a name="x2027061"></a>Error Protocol (EP)</dt>
<dd>A protocol that
provides a means for an Internetwork Packet Exchange (IPX) system to report
that is has detected an error, and as a result of that error, the IPX system
has discarded an IPX packet.</dd>
<dt id="x2001773" class="bold">
<a name="x2001773"></a>escape character</dt>
<dd>The symbol that
is used to enclose an SQL delimited identifier. The escape character is the
double quotation mark, except in COBOL applications, where the user assigns
the symbol, which is either a double quotation mark or an apostrophe.</dd>
<dt id="x2027071" class="bold">
<a name="x2027071"></a>escape message</dt>
<dd>A message that reports
a condition that caused the program to end before the requested function was
complete.</dd>
<dt id="x2027076" class="bold">
<a name="x2027076"></a>escape sequence</dt>
<dd>A string of bit combinations
that is used to escape from normal data, such as text code points, into control
information.</dd>
<dt id="x2205585" class="bold">
<a name="x2205585"></a>ESD</dt>
<dd>See <a href="rzaate.htm#x2140952">electrostatic
discharge</a>.</dd>
<dt id="x2044005" class="bold">
<a name="x2044005"></a>ESP</dt>
<dd>See <a href="rzaate.htm#x2026728">Encapsulated
Security Payload</a>.</dd>
<dt id="x2119558" class="bold">
<a name="x2119558"></a>ESS</dt>
<dd>See <a href="rzaati.htm#x2243801">IBM TotalStorage&reg; Enterprise Storage Server&reg;</a>.</dd>
<dt id="x2191940" class="bold">
<a name="x2191940"></a>ETB character</dt>
<dd>See <a href="rzaate.htm#x2026810">end-of-transmission-block character</a>.</dd>
<dt id="x2027085" class="bold">
<a name="x2027085"></a>Ethernet</dt>
<dd>A packet-based networking
technology for local area networks (LANs) that allows multiple access and
handles contention by using Carrier Sense Multiple Access with Collision Detection
(CSMA/CD) as the access method. Ethernet is standardized in the IEEE 802.3
specification.</dd>
<dt id="x2191938" class="bold">
<a name="x2191938"></a>ETX character</dt>
<dd>See <a href="rzaate.htm#x2026805">end-of-text character</a>.</dd>
<dt id="x2009117" class="bold">
<a name="x2009117"></a>EUC</dt>
<dd>See <a href="rzaate.htm#x2027474">extended UNIX&reg; coded character set</a>.</dd>
<dt id="x2027094" class="bold">
<a name="x2027094"></a>even positive acknowledgment (ACK0)</dt>
<dd>In BSC, the even-numbered, positive acknowledgment character, which indicates
that text was received without transmission errors.</dd>
<dt id="x2027098" class="bold">
<a name="x2027098"></a>event</dt>
<dd>(1) An occurrence of significance
to a task or system, such as the completion or failure of an operation.</dd>
<dd>(2) A representation of a change that occurs to a part. The change enables
other interested parts to receive notification when something about the part
changes. For example, a push button generates an event by signalling that
it has been clicked, which may cause another part to display a window.</dd>
<dd>(3) In OSI, the occurrence of a well-defined situation. Events may be planned
(for example, transactions), or they may be spontaneous or unplanned (for
example, faults). An agent reports events to its managers.</dd>
<dt id="x2027109" class="bold">
<a name="x2027109"></a>event action list</dt>
<dd>In VisualAge&reg; RPG, a
list of controls that indicates the action subroutine to be called by the
event of each control.</dd>
<dt id="x2027114" class="bold">
<a name="x2027114"></a>event filter</dt>
<dd>In OSI, a method for
excluding certain types of events so that they are not reported.</dd>
<dt id="x2027119" class="bold">
<a name="x2027119"></a>event log</dt>
<dd>A log that contains information
about events for a particular system or group, for a particular metric, or
for all the events that are associated with a specific monitor.</dd>
<dt id="x2027124" class="bold">
<a name="x2027124"></a>event report</dt>
<dd>In OSI, the unsolicited
notification of a significant occurrence by an agent to a manager .</dd>
<dt id="x2027129" class="bold">
<a name="x2027129"></a>events file</dt>
<dd>In CoOperative Development
Environment/400, a machine-readable file, created by a compiler or when the
Verify program choice is selected, that contains information about locations
of errors in a source file.</dd>
<dt id="x2027134" class="bold">
<a name="x2027134"></a>EX</dt>
<dd>See <a href="rzaate.htm#x2027181">exception
response</a>.</dd>
<dt id="x2027138" class="bold">
<a name="x2027138"></a>exact end position</dt>
<dd>In RPG, an entry
on the output specifications that indicates where the end position of a field
or constant is to be placed in the output record. See also <a href="rzaatr.htm#x2036443">relative end position</a>.</dd>
<dt id="x2027143" class="bold">
<a name="x2027143"></a>exact-name format</dt>
<dd>In AFP support, a print
descriptor naming convention that uses system-specific (actual) group names
instead of group alias names.</dd>
<dt id="x2027148" class="bold">
<a name="x2027148"></a>EXCEPT group name</dt>
<dd>In RPG, a name
used in the place of indicators to identify a record or group of records written
at exception output time.</dd>
<dt id="x2027153" class="bold">
<a name="x2027153"></a>exception</dt>
<dd>(1) In programming languages,
an abnormal situation that may arise during execution, that may cause a deviation
from the normal execution sequence, and for which facilities exist in a programming
language to define, raise, recognize, ignore, and handle it; for example,
(ON-) condition in PL/I, exception in Ada. (I) See also <a href="rzaats.htm#x2038843">signal</a>.</dd>
<dd>(2) In VisualAge RPG, an event or situation that
prevents, or could prevent, an action requested by a user from being completed
in a manner that the user would expect. Exceptions occur when a product is
unable to interpret a user's input.</dd>
<dt id="x2027161" class="bold">
<a name="x2027161"></a>exceptional wait</dt>
<dd>In Performance Tools,
that portion of internal response time that cannot be attributed to the use
of the processor and disk. An exceptional wait is caused by contention for
internal resources of the system, for example, waiting for a lock on a database
record.</dd>
<dt id="x2027166" class="bold">
<a name="x2027166"></a>exception/error handling</dt>
<dd>In RPG,
user-written code that handles program or file exceptions/errors. If the program
or file exceptions/errors are not controlled by the user, the RPG default
error handler receives control.</dd>
<dt id="x2027171" class="bold">
<a name="x2027171"></a>exception handler</dt>
<dd>A set of routines
that responds to an abnormal condition. An exception handler is able to interrupt
and to resume the normal running of processes in order to deal with an exception.</dd>
<dt id="x2027176" class="bold">
<a name="x2027176"></a>exception request (EXR)</dt>
<dd>In SNA, a
request that replaces another request in which an error was detected. Note:
The exception request contains a 4-byte sense field that identifies the error
in the original request and, except if there were some path errors, is sent
to the destination of the original request; if possible, the sense data is
returned in a negative response to the sender of the original request.</dd>
<dt id="x2027181" class="bold">
<a name="x2027181"></a>exception response (EX, ER)</dt>
<dd>In SNA,
a value in the form-of-response-requested field of the request header that
directs the receiver of the request to return a response only if the request
is unacceptable as received or if the request cannot be processed; that is,
only a negative response can be returned. See also <a href="rzaatd.htm#x2020048">definite response</a>, <a href="rzaatn.htm#x2061619">no response</a>.</dd>
<dt id="x2199390" class="bold">
<a name="x2199390"></a>exchange log name</dt>
<dd>A process used
when sessions are first established to determine which log is being used by
the remote system.</dd>
<dt id="x2027191" class="bold">
<a name="x2027191"></a>exchange media</dt>
<dd>The diskette or the
tape that the user uses when exchanging data with other systems.</dd>
<dt id="x2027196" class="bold">
<a name="x2027196"></a>exchange station ID (XID)</dt>
<dd>In communications,
a data link command or response for recognizing the primary station and a
secondary station.</dd>
<dt id="x2027201" class="bold">
<a name="x2027201"></a>exclude authority</dt>
<dd>An object authority
that prevents the user from using the object or its contents. See also <a href="rzaata.htm#x2013520">all authority</a>.</dd>
<dt id="x2027206" class="bold">
<a name="x2027206"></a>exclusive allow-read lock state</dt>
<dd>The lock on an object that allows only one job to use the object, but allows
other jobs to read the object. The predefined value for this lock state is
*EXCLRD.</dd>
<dt id="x2001803" class="bold">
<a name="x2001803"></a>exclusive lock</dt>
<dd>A lock that prevents
concurrently executing application processes from accessing database data.
See also <a href="rzaatg.htm#x2002174">gross lock</a>, <a href="rzaats.htm#x2004579">shared
lock</a>.</dd>
<dt id="x2027214" class="bold">
<a name="x2027214"></a>exclusive lock state</dt>
<dd>The lock on
an object that allows only one job to use the object; no other job can use
the object. The predefined value for this lock state is *EXCL.</dd>
<dt id="x2027219" class="bold">
<a name="x2027219"></a>exclusive-OR</dt>
<dd>A logic operator having
the property that if P is a binary digit and Q is a binary digit and either
P or Q is 1, but not both, then P exclusive-OR Q is 1.</dd>
<dt id="x2199420" class="bold">
<a name="x2199420"></a>EXEC interface block (EIB)</dt>
<dd>A control
block associated with each task in a CICS&reg; command-level environment. The EIB contains
information that is useful during the execution of an application program
(such as the transaction identifiers) and information that is helpful when
a dump is being used to debug a program.</dd>
<dt id="x2001808" class="bold">
<a name="x2001808"></a>executable statement</dt>
<dd>An SQL statement
that can be embedded in an application program, dynamically prepared and executed,
or issued interactively.</dd>
<dt id="x2027229" class="bold">
<a name="x2027229"></a>execute authority</dt>
<dd>An object authority
that allows the user to run a program or procedure or to search a library
or directory.</dd>
<dt id="x2199430" class="bold">
<a name="x2199430"></a>execution diagnostic facility (EDF)</dt>
<dd>A CICS facility used for testing application programs interactively online,
without making any modifications to the source program or to the program preparation
procedure. The facility intercepts execution of the program at various points
and displays information about the program at these points. Also displayed
are any screens sent by the user program, so that the programmer can converse
with the application program during testing just as a user would do on the
production system.</dd>
<dt id="x2027249" class="bold">
<a name="x2027249"></a>exit point</dt>
<dd>A specific point in a
system function or program where control may be passed to one or more specified
exit programs. See also <a href="rzaate.htm#x2027259">exit program</a>.</dd>
<dt id="x2027254" class="bold">
<a name="x2027254"></a>exit point provider</dt>
<dd>The person responsible
for defining the exit point information, defining the format of the data the
exit program receives, and calling the exit programs.</dd>
<dt id="x2027259" class="bold">
<a name="x2027259"></a>exit program</dt>
<dd>(1) A program to which control
is passed from an exit point. See also <a href="rzaate.htm#x2027249">exit point</a>.</dd>
<dd>(2) A user-written program that is given control during operation
of a system function.</dd>
<dt id="x2027267" class="bold">
<a name="x2027267"></a>exit status</dt>
<dd>The return value from
a thread. A variable of type void * typically contains a pointer to a control
block pointer or a return value that shows under what conditions the thread
ended.</dd>
<dt id="x2027277" class="bold">
<a name="x2027277"></a>expanded communications buffer</dt>
<dd>A
feature of the 3741 device that allows multiple records to be transmitted
or received in one block of data.</dd>
<dt id="x2027282" class="bold">
<a name="x2027282"></a>expanded memory</dt>
<dd>On most computers,
additional memory accessed through an adapter or feature card along with a
device driver program. See also <a href="rzaatc.htm#x2018599">conventional memory</a>.</dd>
<dt id="x2054651" class="bold">
<a name="x2054651"></a>expansion slot</dt>
<dd>In personal-computer
systems, one of several receptacles in the rear panel of the system unit into
which a user can install an adapter.</dd>
<dt id="x2027292" class="bold">
<a name="x2027292"></a>expansion unit</dt>
<dd>(1) A feature that can
be connected to a system unit to provide additional storage and processing
capacity.</dd>
<dd>(2) A feature that contains I/O hardware such as cards,
tapes, and disk units. The system may have multiple expansion units. An expansion
unit can be bolted directly to the side of a system unit and is contained
within the system unit covers. An expansion unit can also be mounted on top
of a rack and has its own covers. Internal signal cables interconnect the
expansion unit to the system unit or rack.</dd>
<dt id="x2027297" class="bold">
<a name="x2027297"></a>expedited data</dt>
<dd>In OSI, a data transfer
service provided by the session layer to transfer a small amount of data that
is not subject to permission-to-send and flow-control restrictions. The OSI
layers attempt to expedite the transfer of such data.</dd>
<dt id="x2027302" class="bold">
<a name="x2027302"></a>expedited forwarding</dt>
<dd>A per-hop behavior
in the Differentiated Services (DiffServ) standard that is used to create
a virtual leased line service.</dd>
<dt id="x2027307" class="bold">
<a name="x2027307"></a>expert cache</dt>
<dd>An extension of the
storage management function of the i5/OS operating system that allows the single-level
storage architecture to take better advantage of the main storage (cache)
capacities.</dd>
<dt id="x2027317" class="bold">
<a name="x2027317"></a>expiration date</dt>
<dd>(1) The date at which
a file is no longer protected against automatic deletion by the system.</dd>
<dd>(2) The date after which a database file member should not be used.</dd>
<dt id="x2027325" class="bold">
<a name="x2027325"></a>expired</dt>
<dd>In Backup Recovery and Media
Services, to denote when media is available for a rewrite operation. Media
is automatically expired when both the retention period (expiration date)
and storage duration have been satisfied.</dd>
<dt id="x2210458" class="bold">
<a name="x2210458"></a>expired password</dt>
<dd>A password that
has not been changed within 180 days or more.</dd>
<dt id="x2027335" class="bold">
<a name="x2027335"></a>explicit scope terminator</dt>
<dd>In COBOL,
a reserved word that ends the scope of a particular Procedure Division statement.</dd>
<dt id="x2027340" class="bold">
<a name="x2027340"></a>exponent</dt>
<dd>(1) In floating-point format,
an integer constant specifying the power of ten by which the base of the decimal
floating-point number is to be multiplied.</dd>
<dd>(2) A number, indicating
to which power another number (the base) is to be raised.</dd>
<dt id="x2027351" class="bold">
<a name="x2027351"></a>exponentiation</dt>
<dd>The process in which
a quantity is raised to a power. In COBOL, exponentiation is indicated with
the symbol ** followed by an exponent.</dd>
<dt id="x2001853" class="bold">
<a name="x2001853"></a>export</dt>
<dd>(1) An external symbol defined
in a module or service program that is available for use by other modules
or programs. See also <a href="rzaati.htm#x2002346">import</a>.</dd>
<dd>(2) In the
Application Development Manager feature of the Application Development ToolSet
licensed program, to copy a single part or the components of an application
from an Application Development Manager project into a particular i5/OS library.</dd>
<dd>(3) A function or process that converts an internal file to some standard
file format for use outside of an application.</dd>
<dd>(4) In Network File
System (NFS), to make file systems on a server available to remote clients.</dd>
<dt id="x2027375" class="bold">
<a name="x2027375"></a>exported form</dt>
<dd>In query management,
the source file member that results from running an EXPORT FORM command.</dd>
<dt id="x2027380" class="bold">
<a name="x2027380"></a>exported query</dt>
<dd>In query management,
the source file member that results from running an EXPORT QUERY command.</dd>
<dt id="x2001858" class="bold">
<a name="x2001858"></a>exposed name</dt>
<dd>A correlation name,
a table, or a view name specified in a FROM clause for which a correlation
name is not defined.</dd>
<dt id="x2001863" class="bold">
<a name="x2001863"></a>expression</dt>
<dd>(1) In DDS, a pair of values
that represents a single parameter value.</dd>
<dd>(2) In SQL, a representation
of a value by means of variables or constants, sometimes in combination with
arithmetic operators.</dd>
<dd>(3) In REXX, a general means for combining one
or more pieces of data in various ways to produce a result, usually different
from the original data. Expressions consist of terms (literal strings, function
calls, and symbols), and zero or more operators.</dd>
<dd>(4) In C, a group
of constants or variables separated by operators that yields a single value.</dd>
<dt id="x2054705" class="bold">
<a name="x2054705"></a>EXR</dt>
<dd>See <a href="rzaate.htm#x2027176">exception
request</a>.</dd>
<dt id="x2027403" class="bold">
<a name="x2027403"></a>Extended Adaptive Cache</dt>
<dd>A large high-speed
memory that is used exclusively to store user data that would otherwise have
been accessed from one or more disks.</dd>
<dt id="x2027408" class="bold">
<a name="x2027408"></a>Extended Adaptive Cache Simulator</dt>
<dd>A performance tool that allows system users to assess the benefits of an Extended
Adaptive Cache before purchasing one. When the Extended Adaptive Cache simulator
is active on a specified storage controller, performance information is generated
for a system's actual workload over time.</dd>
<dt id="x2027413" class="bold">
<a name="x2027413"></a>extended attribute</dt>
<dd>(1) Information attached
to an object that describes the object to an application system or user.</dd>
<dd>(2) A characteristic of a shared folder file. Each extended attribute consists
of a name, a value, and a set of flags.</dd>
<dt id="x2027421" class="bold">
<a name="x2027421"></a>extended attribute flag</dt>
<dd>A flag that
is stored for the extended attribute, such as the read/write flag.</dd>
<dt id="x2027426" class="bold">
<a name="x2027426"></a>extended attribute name</dt>
<dd>The name
that identifies the specific extended attribute that is to be stored, changed,
or retrieved.</dd>
<dt id="x2027431" class="bold">
<a name="x2027431"></a>extended attribute subprofile</dt>
<dd>The
interchange document subprofile that contains non-DIA extended attributes
for a document.</dd>
<dt id="x2027436" class="bold">
<a name="x2027436"></a>extended attribute value</dt>
<dd>The data
stored in an extended attribute.</dd>
<dt id="x2009089" class="bold">
<a name="x2009089"></a>Extended Binary Coded Decimal Interchange Code
(EBCDIC)</dt>
<dd>A coded character set of 256 8-bit characters developed
for the representation of textual data. EBCDIC is not compatible with ASCII
character coding. See also <a href="rzaata.htm#x2014116">American Standard Code for
Information Interchange</a>.</dd>
<dt id="x2054724" class="bold">
<a name="x2054724"></a>extended character</dt>
<dd>Double-byte characters
that are stored in a DBCS font file, not in the hardware of a DBCS-capable
work station. When displaying or printing extended characters, the work station
receives them from the DBCS font table under control of the extended character
processing function of the operating system. See also <a href="rzaatb.htm#x2015153">basic character</a>.</dd>
<dt id="x2027444" class="bold">
<a name="x2027444"></a>extended character processing</dt>
<dd>A function
of the operating system that is required to make characters stored in a DBCS
font file available to a DBCS-capable work station. Basic characters, which
are stored in the work station, do not require extended character processing.
Extended characters, which are stored in a DBCS font table, require extended
character processing before they can be displayed or printed. See also <a href="rzaatb.htm#x2015153">basic character</a>.</dd>
<dt id="x2027454" class="bold">
<a name="x2027454"></a>extended help</dt>
<dd>Online documentation
that explains the purpose of the display. Extended help appears if the user
presses the Help key when the cursor is outside the areas for which contextual
help is available.</dd>
<dt id="x2027459" class="bold">
<a name="x2027459"></a>extended interface</dt>
<dd>In query management,
the set of language-specific interfaces used to run commands that require
access to program variables. The extended interface includes: communications
area; command length; command string; number of keywords or variables; array
of keyword or variable name lengths; array of keyword or variable names; array
of keyword or variable value lengths; array of keyword or variable values;
and value type.</dd>
<dt id="x2027464" class="bold">
<a name="x2027464"></a>extended memory</dt>
<dd>Personal computer
memory that is addressed by DOS, from 1 MB to 16 MB, to increase conventional
memory and expanded memory.</dd>
<dt id="x2027469" class="bold">
<a name="x2027469"></a>extended parameter list</dt>
<dd>In query
management, the arguments of the extended interface that are not defined on
the short interface.</dd>
<dt id="x2027474" class="bold">
<a name="x2027474"></a>extended UNIX coded character set (EUC)</dt>
<dd>A set of characters that contains mixed characters. EUC is the mixture
of the ISO 7- or 8-bit code page and up to 3 other code pages that can have
characters represented internally in 1 to 3 bytes. Extended UNIX coded character
set uses multiple shift-in and shift-out control characters and TCP/IP escape
sequences within the data stream to switch between four different character
sets.</dd>
<dt id="x2027479" class="bold">
<a name="x2027479"></a>extend mode</dt>
<dd>(1) In COBOL, the state of
a file after running an OPEN statement, with the EXTEND phrase specified for
that file, and before running a CLOSE statement, without the REEL or UNIT
phrase specified for that file.</dd>
<dd>(2) In COBOL, a method of adding records
to the end of a sequential file when the file is opened.</dd>
<dt id="x2027487" class="bold">
<a name="x2027487"></a>Extensible Markup Language (XML)</dt>
<dd>A standard metalanguage for defining markup languages that is based on Standard
Generalized Markup Language (SGML). XML simplifies the process of authoring
and managing structured information and transmitting and sharing structured
information across diverse computing systems.</dd>
<dt id="x2027492" class="bold">
<a name="x2027492"></a>external data</dt>
<dd>(1) Data that is exported
from one procedure and imported into another procedure. See also <a href="rzaati.htm#x2025832">internal data</a>.</dd>
<dd>(2) In COBOL, the data described in a program as
external data items and external file connectors.</dd>
<dt id="x2027500" class="bold">
<a name="x2027500"></a>external data definition</dt>
<dd>A description
of a variable appearing outside a function. It causes the system to allocate
storage for that variable and makes that variable accessible to all functions
that follow the definition and are located in the same file as the definition.</dd>
<dt id="x2027505" class="bold">
<a name="x2027505"></a>external data item</dt>
<dd>In COBOL, a data
item that is described as part of an external record in one or more programs
of a run unit and which itself may be referred to from any program in which
it is described.</dd>
<dt id="x2027510" class="bold">
<a name="x2027510"></a>external data record</dt>
<dd>In COBOL, a
logical record that is described in one or more programs of a run unit and
whose constituent data items may be referred to from any program in which
they are described.</dd>
<dt id="x2027515" class="bold">
<a name="x2027515"></a>external file connector</dt>
<dd>In COBOL,
a file connector that is accessible to one or more programs in the run unit.</dd>
<dt id="x2027520" class="bold">
<a name="x2027520"></a>external indicator</dt>
<dd>In RPG, an indicator
that can be set by another program before a program is run, or changed by
another program while the program is running. Valid external indicators are
U1 through U8.</dd>
<dt id="x2027525" class="bold">
<a name="x2027525"></a>externalized form</dt>
<dd>In query management,
the name of the file resulting from running an EXPORT command against a form.</dd>
<dt id="x2027530" class="bold">
<a name="x2027530"></a>externalized query</dt>
<dd>In query management,
the name of the form resulting from running an EXPORT command against a query.</dd>
<dt id="x2027535" class="bold">
<a name="x2027535"></a>externally described data</dt>
<dd>Data contained
in a file for which the fields and the records are described outside of the
program (such as with files created by DDS, IDDU, or DB2 UDB for iSeries) that processes the file.</dd>
<dt id="x2027540" class="bold">
<a name="x2027540"></a>externally described file</dt>
<dd>A file
in which the records and fields are described to the system when the file
is created, and used by the program when the file is processed. See also <a href="rzaatp.htm#x2035008">program-described data</a>, <a href="rzaatp.htm#x2035013">program-described
file</a>.</dd>
<dt id="x2027545" class="bold">
<a name="x2027545"></a>external message queue</dt>
<dd>A message
queue used by all programs and procedures running within a job to send and
to receive messages outside a job, for example, between an interactive job
and the workstation user.</dd>
<dt id="x2027550" class="bold">
<a name="x2027550"></a>external object</dt>
<dd>An object that has
a defined object type (such as *FILE or *PGM). In general, external objects
can be displayed by a user. See also <a href="rzaati.htm#x2025859">internal object</a>.</dd>
<dt id="x2027555" class="bold">
<a name="x2027555"></a>external procedure</dt>
<dd>A procedure that
is not contained within a block.</dd>
<dt id="x2001898" class="bold">
<a name="x2001898"></a>external routine</dt>
<dd>In REXX, a program
external to the user's program, language processor, or both. These routines
can be written in any language (including REXX) that supports the system-dependent
interfaces used by REXX to start it.</dd>
<dt id="x2027563" class="bold">
<a name="x2027563"></a>external storage</dt>
<dd>Data storage not
located in main or auxiliary storage, such as tape or diskette.</dd>
<dt id="x2027568" class="bold">
<a name="x2027568"></a>external switch</dt>
<dd>In COBOL, a hardware
or software device, defined and named by the compiler, that is used to indicate
that one of two states exists.</dd>
<dt id="x2027573" class="bold">
<a name="x2027573"></a>external symbol</dt>
<dd>(1) An item defined in
a high-level language program that represents such things as procedures or
variables. Resolving external symbols is the means by which the binder connects
modules to form a bound program or a service program.</dd>
<dd>(2) An entry-point
name or external variable that is defined or referred to in a particular module
or program.</dd>
<dt id="x2027581" class="bold">
<a name="x2027581"></a>external system</dt>
<dd>A system that exists
outside a particular network.</dd>
<dt id="x2027586" class="bold">
<a name="x2027586"></a>external variable</dt>
<dd>A variable that
is outside the lexical scope of the function, procedure, or program that is
calling it.</dd>
<dt id="x2027591" class="bold">
<a name="x2027591"></a>extract service</dt>
<dd>In OSI, a callable
service that obtains optional information from OSI Communications Subsystem.
See also <a href="rzaata.htm#x2012979">action service</a>, <a href="rzaats.htm#x2038604">set services</a>.</dd>
<dt id="x2027596" class="bold">
<a name="x2027596"></a>extranet</dt>
<dd>A private, virtual network
that uses access control and security features to restrict the usage of one
or more intranets attached to the Internet to selected subscribers (such as
personnel from a sponsoring company and its business partners).</dd>
<dt id="x2027601" class="bold">
<a name="x2027601"></a>extrapartition</dt>
<dd>In CICS, a type of
transient data queue. Extrapartition destinations can be accessed either within
the CICS environment or outside of CICS ; they can be defined as either input
or output.</dd>
<dt id="x2027606" class="bold">
<a name="x2027606"></a>EZ-Setup</dt>
<dd>A wizard that allows user
to install iSeries Navigator; set the system name, date, time, and some basic security
values, and perform some other tasks.</dd></dl>
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