`
`
`IBM DICTIONARY
`
`
`
`OF COMPUTING
`
`
`
`GEORGE McDANIEL
`
`Compiled and edited by
`
`
`
`
`
`
`McGRAW-HILL, INC.
`New York San Francisco Washington, D.C. Auckland Bogota
`Caracas Lisbon London Madrid Mexico City Milan
`Montreal New Delhi San Juan Singapore
`Sydney Tokyo Toronto
`
`
`
`
`
`INTEL 1217
`
`INTEL 1217
`
`1
`
`
`
`Limitation of Liability
`While the Editor and Publisher of this book have made reasonable efforts to
`ensure the accuracy and timeliness of the information contained herein, nei‘
`ther the Editor nor the Publisher shall have any liability with respect to loss or
`damage caused or alleged to be caused by reliance on any information con-
`tained herein.
`
`Copyright © 1994 by International Business Machines Corporation. All rights
`reserved. Printed in the United States of America. Except as permitted under
`the United States Copyright Act of 1976, no part of this publication may be
`reproduced or distributed in any form or by any means, or stored in a data
`base or retrieval system, without the prior written permisssion of the pub-
`lisher.
`
`1234567890 DOC/DOC 99876543
`
`This book is printed on acidiree paper.
`
`It is possible that this material may contain reference to, or information about,
`IBM products (machines and programs), programming, or services that are
`not announced in your country. Such references or information must not be
`construed to mean that IBM intends to announce such IBM products, pro-
`gramming, or services in your country. Comments may be addressed to IBM
`Corporation, Department E37/656, P. O. Box 12195, Research Triangle Park,
`NC 27709.
`
`ISBN O~07-O31488—8 (HC)
`ISBN 0-07-031489—6 (PBK)
`
`The sponsoring editor for this book was Daniel A. Gonneau and the
`production supervisor was Thomas G. Kowalczyk.
`
`Printed and bound by R. R. Donnelley & Sons Company.
`
`Tenth Edition (August 1993)
`
`This is a major revision of the IBM Dictionary of Computing, SC20-1699-8,
`which is made obsolete by this edition. Changes are made periodically to the
`information provided herein.
`
`International Edition
`
`Copyright © 1994 by International Business Machines Corporation. Exclusive
`rights by McGraw—Hill, Inc. for manufacture and export. This book cannot be
`re-exported from the country to which it is consigned by McGraw-Hill. The
`International Edition is not available in North America.
`
`When ordering this title, use ISBN 0-07-1133836
`
`2
`
`
`
`condition-name-condition
`configuration report server (CRS)
`
`Note: When condition-name is used in the general
`formats,
`it
`represents a unique data item reference
`consisting of a syntactically correct combination of a
`condition—name,
`together with qualifiers
`and sub—
`scripts, as required for uniqueness of reference.
`
`the proposi~
`condition-name-condition In COBOL,
`tion, for which a truth value can be determined,
`that
`the value of a conditional variable is a member of the
`set of values attributed to a condition—name associated
`with the conditional variable.
`
`conditions See entry conditions.
`
`Information
`IBM 8100
`the
`condition values In
`System,
`the values assigned to various combinations
`of the condition indicators;
`they may be used as mask
`values in conditional branching operations.
`
`conduit A pipe for protecting electric wires or cables.
`
`conference call Teleconferencing in which all partic-
`ipants are connected through telephone circuits that
`allow for the transmission of voice and possibly FAX
`messages.
`(T)
`See also computer conferencing.
`
`conference control Synonym for sensitivity control.
`
`a
`conference microphone On dictation equipment,
`microphone specially designed to record speech simul-
`taneously from more than one directional source. (I)
`
`confetti In video systems, the undesirable appearance
`of small, colored spots caused by signal drop—outs or
`by other forms of video noise. See also noise.
`
`In the Network
`Configuration Exchange Utility
`Carrier Interconnect Manager and Agent programs, a
`host utility that converts configuration data from a
`carrier management system into a format that can be
`handled by host network management products, specif-
`ically,
`the NetView .and NETCENTER programs.
`This utility also converts configuration data from the
`VTAM definition library (VTAMLST)
`and from
`NETCENTER network definition files into a format
`that can be handled by a carrier management system.
`
`configuration file (1) A file that specifies the charac—
`teristics of a
`system or
`subsystem.
`(2) In the
`ImagePlus System,
`the file that is created by running
`the Configuring Facility of the ImagePlus Workstation
`Program, and which contains the features of a specific
`ImagePlus workstation.
`The file is stored on the
`installation diskette, and is used by the Installation
`Facility.
`
`configuration image In the 3600 Finance Communi—
`cation System, a combination of formatted configura—
`tion data with selected modules of controller data;
`when loaded into 3601 control storage,
`the configura—
`tion image determines
`the operations of
`the 3601
`Finance Communication Controller. A configuration
`image is produced by the Finance Image Processor.
`The completed image is stored in the 3600 and trans—
`mitted later to a 3601 controller.
`
`configuration manager A program that supervises
`device configuration during initial program load (IPL).
`
`configuration matrix In an ESCON environment, an
`array of connectivity attributes that appear as rows and
`columns on a display device and can be used to deter—
`mine or change active and saved configurations.
`
`configuration member In System/36, a member that
`defines the attributes of a communication subsystem or
`line.
`
`notifications about active monitor failures.
`
`configuration (1) The manner in which the hardware
`and software of an information processing system are
`organized and interconnected.
`(T)
`(2) The physical
`and logical arrangement of devices and programs that
`make up a data processing system. See also commu-
`nications
`configuration,
`controller
`configuration,
`device configuration.
`(3) The devices and programs
`that make up a system, subsystem, or network.
`(4) In
`CCP,
`the arrangement of controllers,
`lines, and termi-
`nals attached to an IBM 3710 Network Controller.
`Also,
`the
`collective
`set of
`item definitions
`that
`describe such a configuration.
`(5) See also system
`configuration.
`
`configuration control board Qualified personnel who
`evaluate,
`for approval or disapproval, all proposed
`changes to the current developmental baseline.
`(T)
`
`Configuration Control Program (CCP) An IBM
`licensed program used interactively to define, display,
`and alter configurations that contain network control-
`lers.
`
`configuration procedure The multistep process, per
`formed in the host computer, of constructing a config—
`uration image for
`a 3601 Finance Communication
`Controller.
`
`configuration report program (CRP) An SSP utility
`program that creates a configuration report
`listing
`network resources and resource attributes for networks
`with NCP, EP, PEP, or VTAM programs.
`
`configuration report server (CRS) In the AS/400
`system, a function that resides on each ring in an envi~
`ronment of multiple token—ring networks in which con—
`figuration is being monitored. This function receives
`notifications about inserting and removing stations and
`
`3
`
`
`
`
`
`configuration restart
`
`[137]
`
`connection
`
`the
`configuration restart In the VTAM programs,
`recovery facility that can be used after a failure or
`deactivation of a major node, VTAM, or
`the host
`processor,
`to restore the domain to its status at
`the
`time of the failure or deactivation.
`
`Configuration Rules Object Class In the AIX oper-
`ating system, an object class that contains the config-
`uration rules used by the configuration manager during
`initial program load (IPL).
`
`Configuration Section In COBOL, a section of the
`Environment Division that describes overall specifica—
`tions of source programs and object programs.
`
`conformant string In XL Pascal, a string whose
`declared length does not match that of a
`formal
`parameter. See also formal parameter.
`
`conforming In multimedia applications, performing
`final editing on film or video using an offline edited
`master as a guide.
`"
`
`CONFT VTAM configuration table.
`
`conjunct One of a number of subproblems or condi-
`tions of a conjunction, all of which are required to be
`satisfied in order for the conjunction as a whole to be
`satisfied.
`(T)
`
`configuration services One of the types of network
`services in a control point (SSCP, NNCP, ENCP, or
`PUCP). Configuration services activates, deactivates,
`and records the status of physical units, links, and link
`stations.
`
`conjunction (1) The Boolean operation whose result
`has the Boolean value I
`if and only if each operand
`has the Boolean value 1. (I)
`(A)
`Synonymous with
`AND operation,
`intersection.
`(2) Contrast with non—
`conjunction.
`
`
`
`
`
`
`
`
`
`
`
`[yer (CRS)
`
`the Network
`programs, a
`data from a
`t that can be
`ducts, specif—
`R programs.
`lata from the
`)
`and from
`nto a format
`tent system.
`
`is the charac-
`(2) In the
`d by running
`9 Workstation
`of a specific
`tored on the
`e Installation
`
`:e Communi-
`ed configura—
`ntroller data;
`he configura—
`of the 3601
`configuration
`ge Processor.
`00 and trans—
`
`supervises
`at
`n load (IPL).
`
`vironment, an
`r as rows and
`used to deter—
`'ations.
`
`member that
`subsystem or
`
`process, per—
`ting a config—
`ammunication
`
`In SSP utility
`report
`listing
`, for networks
`
`l
`
`the AS/400
`
`ng in an envi-
`in which con~
`ction receives
`g stations and
`h
`
`
`
`
`
`containing
`configuration tables The DBZ tables
`system-wide parameters, and defining the interfaces to
`the Object Distribution Manager.
`
`system the devices,
`to a
`configure To describe
`optional
`features,
`and programs
`installed on the
`system.
`
`ImagePlus
`the
`configuring facility A facility of
`Workstation Program that allows the user to tailor the
`ImagePlus Workstation Program software to a specific
`environment. The output of the configuring process is
`a diskette that can be installed on each workstation.
`
`confirmation A type of response by a receiver that
`permits a sender to continue.
`
`the
`confirmation of delivery In the AS/400 system,
`automatic notification to the sender of a message,
`note, or document as to when the message, note, or
`document is received. Confirmation of delivery must
`be requested by the sender.
`
`confirm primitive A primitive issued by a service
`provider to indicate that it has completed a procedure
`previously invoked by a request primitive at the same
`service access point. (T)
`
`resolution The technique of
`conflict
`problem of multiple matches
`in
`system. (T)
`
`resolving the
`a
`rule-based
`
`conformance In FORTRAN, pertaining to an execut—
`able program that uses only the forms and relation—
`ships described in Programming Language FORTRAN,
`ANSI X3.9—1978 or to a program unit
`that can be
`included in an executable program in a manner that
`allows the executable program to comply with that
`standard. See core conformance.
`
`connect data set to line (CDSTL) In SNA, an option
`that determines how the data terminal
`ready (DTR)
`signal
`to the modern operates.
`It
`is used if a DTR
`indicates an unconditional command from the data ter—
`minal equipment (DTE) to the attached data circuit-
`terminating equipment (DCE) to connect to or remove
`itself from the network.
`
`connected (1) In VTAM programs, pertaining to a
`physical unit (PU) or logical unit (LU) with an active
`physical path to the host processor containing the
`system services control point (SSCP) that controls the
`PU or LU.
`(2) In an ESCON Director, the attribute
`that, when set, establishes
`a dedicated connection.
`Contrast with disconnected.
`(3) In FORTRAN, per—
`taining to a unit that refers to a file that refers to the
`unit.
`
`connected unit In XL FORTRAN, a unit that is con—
`nected to a file by either an OPEN, READ, or WRITE
`statement.
`
`connection (1) In data communication, an association
`established between functional units
`for conveying
`information.
`(I)
`(A)
`(2)
`In programming, a mech—
`anism that enables interaction among modules, partic—
`ularly procedure calls to asynchronous procedures;
`for
`example,
`in COBOL, an ENABLE statement estab-
`lishes a communication connection, and an OPEN
`statement establishes an input/output connection. (I)
`(3) In Open Systems Interconnection architecture, an
`association established by a given layer between two
`or more entities of the next higher
`layer
`for
`the
`purpose of data transfer.
`(T)
`(4) In VTAM pro—
`grams, synonym for physical connection.
`(5) In SNA,
`the network path that links together two logical units
`(LUs) in different nodes to enable them to establish
`communications.
`(6) In X25 communication,
`
`a
`
`4
`
`