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B2B
See business-to-business.
B2B direct business model
A business model that supports commerce
transactions involving products, services,
or information between two businesses or
parties. Typical B2B direct transactions
occur between buyers, suppliers,
manufacturers, resellers, distributors, and
trading partners. The ToolTech starter store
is an example of a B2B direct business. See
also direct sales business model, consumer
direct.
B2C
See business-to-consumer.
B2E
See business-to-employee.
B8ZS
See bi-polar with 8-zero substitution.
BA
See basic authentication.
backbone
A set of nodes and their interconnecting
links that form a central, high-speed
network interconnecting other, typically
lower-speed, networks or client nodes.
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backbone LAN segment
In a multiple segment configuration of a LAN,
a centrally located LAN segment to which
other LAN segments are connected by means of
bridges.
backbone network
A central network to which smaller networks,
normally of lower speed, connect. The
backbone network usually has a much higher
capacity than the networks it helps
interconnect or is a wide-area network (WAN)
such as a public packet-switched datagram
network.
back-end service time
The time it takes for a Web server to
receive a requested transaction, process it,
and respond to it.
back-end system
The CICS or IMS system in which existing
applications run. Equivalent to partner
system. See also front-end system.
back-end transaction
In synchronous transaction-to-transaction
communication, a transaction that is started
by a front-end transaction. See also
front-end transaction.
background
The conditions under which low-priority,
noninteractive programs are run. See also
foreground.
background color
In the GDDM function, the first color of the
display medium; for example, black on a
display or white on a printer. See also
neutral color.
background connection
Any connection defined in a HATS application
other than the default connection. HATS does
not transform screens from background
connections. See also default connection,
connection.
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background event
An action submitted by the user to run
outside the user-interface. These include
explicitly scheduled actions like import and
publish but can also include auto-generation
if details templates are defined for a
resource type.
background music
Any audio data that is played on a music
channel.
background partition
An area of virtual storage in which programs
are executed under control of the system. By
default, the partition has a processing
priority lower than any of the existing
foreground partitions.
background plane
The Tivoli NetView submap layer that
provides the background for the application
plane. The background plane can display a
picture that provides context for viewing
the icons of the application plane. See also
application plane, user plane.
back-office business logic
The implementation of business logic, using
commands and customized code, allowing a
customer to complete an action in the store
front. For example, the implementation of
business logic that allows a customer to
complete an order. See also storefront
assets.
backorder
The status of an ordered product when
inventory allocation has determined that the
product is not available.
back out
To remove changes from a physical file
member in the inverse order from which the
changes were originally made.
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backout
(1) An operation that reverses all the
changes made during the current unit of
recovery or unit of work. After the
operation is complete, a new unit of
recovery or unit of work begins. See also
commit.
(2) The process of undoing uncommitted
changes that an application process has
made. A backout might be necessary in the
event of a failure on the part of an
application process, or as a result of a
deadlock situation. See also roll back,
backout free interval.
(3) The process of restoring to a previous
state all or part of a system. The process
of removing all the updates against
protected resources such as files and DL/I
databases performed by an application
program that either has terminated
abnormally or was inflight at the time of a
CICS or MVS or VSE image failure. Backout
can by done dynamically in the case of an
application abend, or during restart in the
case of CICS or MVS or VSE failure.
backout free interval
A set of log records that are not
compensated if the transaction aborts. See
also backout.
backout recovery
The process of returning a file to a
particular point by removing journaled
changes to the file.
backplane
A hardware part that has (in one or more
planes) logic paths, low-voltage
distribution paths, and grounding paths of a
section of a machine.
back-to-back gateways
Two gateways separated by one intervening
network that contains no gateway system
services control point (SSCP) function
involved with either of the two gateway NCPs.
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back up
(1) To copy information to another location
to ensure against loss of data. See also
restore.
(2) To save information or objects on a
system, usually to tape or diskette, for
safekeeping.
backup
(1) A copy of a database or table space that
can be stored on a different medium and used
to restore the database or table space in
the event of failure or damage to the
original.
(2) A tape, diskette, or save file
containing saved objects.
(3) The process of copying a file,
directory, file system, or other data onto a
tape, disk, or other media as insurance
against data loss or corruption. When a user
backs up a directory or filesystem, the
backup procedure preserves the directory
structure. See also restore.
(4) Pertaining to an alternative copy used
as a substitute if the original is lost or
destroyed, such as a backup log.
(5) The process of making a copy of a data
file that can be used if the original file
is destroyed.
backup control group
In Backup Recovery and Media Services, a
group of libraries, system keywords, and
lists that share common backup
characteristics. The default values for a
backup control group are defined in the
backup policy and can be used or overridden
by each backup control group.
backup copy
A file that was backed up to a storage pool.
backup focal point
A focal point that provides management
services support for a particular category
for a node in the event of a communications
failure with the primary focal point. Both
assigned focal points (explicit and implicit)
and default focal points can have backup
counterparts. See also primary focal point.
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backup history
In Backup Recovery and Media Services, a
report of what has been backed up with a
BRMS backup policy. A backup history
contains information about each item such as
what type of object it is, the date and time
it was saved, and when the saved item
expires. Synonymous with media information
report.
backup list
(1) In the Operational Assistant function, a
list of libraries or folders to be saved on
a regular basis, such as daily or weekly.
(2) In Backup Recovery and Media Services, a
group of objects or folders that are grouped
together for processing in a backup control
group. Each list is assigned a unique list
name.
backup node
A cluster node on which there is a secondary
copy of a cluster resource. The copy is kept
current through replication.
backup pending
The state of a database or table space that
prevents an operation from being performed
until the database or table space is backed
up.
backup policy
In Backup Recovery and Media Services, a set
of controls that are used to track
information about the items that are being
backed up, when they are being backed up,
and where they are being backed up. Backup
policy is a combination of the concepts of
control group and media policy.
Backup Recovery and Media Services (BRMS)
An IBM licensed program that provides
user-modifiable backup, archive, recovery,
and media management functions and policies.
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backup session
The session that replaces the failing
primary extended recovery facility (XRF)
session between a terminal user and the
active subsystem.
backup set
A portable, consolidated group of active
backup copies that can be generated for a
backup-archive client.
backup system
In iSeries Navigator, a server that replaces
a central system when the central system
requires maintenance or upgrades.
backup version
A file that a user backed up to server
storage. More than one backup version can
exist in server storage, but only one backup
version is the active version. See also
active version, inactive version.
backup while open (BWO)
A means of taking backups of VSAM files
that CICS is concurrently updating. Backups
taken with this facility are accepted as
input by the CICSVR forward recovery
program.
Backus-Naur Form (bnf)
A metalanguage that is used to describe
the syntax of a given language and its
notation. In speech recognition, a special
adaptation of grammar representation
specified by Speech Recognition Control
Language (SRCL) (pronounced "circle").
backward log recovery
The fourth and final phase of restart
processing during which DB2 Universal
Database for z/OS and OS/390 scans the log
in a backward direction to apply UNDO log
records for all aborted changes.
backward recovery
The process of restoring integrity to
databases and other recoverable resources
following a failure.
bag
See data bag.
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BAN connection
The connection from an SNA peripheral
node through a boundary access node (BAN)
over a frame-relay link to a subarea
boundary node. The two portions of the BAN
connection (one between the peripheral node
and the BAN, and the other between the BAN
and the boundary node) use different MAC
addresses to identify the boundary node.
BAN DLCI MAC address
The MAC address that identifies a
subarea boundary node as the source or
destination of frames carried over the
portion of a BAN connection between an SNA
peripheral node on a LAN and a boundary
access node (BAN). The BAN DLCI MAC address
appears as the source MAC address in frames
sent from the BAN to the peripheral node and
as the destination MAC address in frames
sent from the peripheral node to the BAN.
The portion of the BAN connection between
the BAN and the boundary node uses the
boundary node identifier (BNI) rather than
the BAN DLCI MAC address.
bandwidth
(1) In asynchronous transfer mode (ATM),
the capacity of a virtual channel, expressed
in terms of peak cell rate (PCR),
sustainable cell rate (SCR), and maximum
burst size (MBS).
(2) The difference, expressed in hertz,
between the highest and the lowest
frequencies of a range of frequencies.
(3) The capacity of a communications line,
normally expressed in bits per second (bps).
(4) A measure of the capacity of a
communication transport medium (such as a TV
cable) to convey data.
bank identifier code ( BIC BIC)
(1) An ISO standard used to uniquely
identify banks and their branches.
(2) A 12-character code used to identify a
bank within the SWIFT network.
bar chart
A chart consisting of several bars of
equal width. The value of the dependent
variable is indicated by the height of each
bar.
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bar code
A pattern of bars of various widths
containing data to be interpreted by a
scanning device.
bar file
See broker archive file.
bar graph
In Performance Tools, a graph consisting
of several bars of equal width. The value of
the dependent variable is indicated by the
height of each bar.
BAROC
See Basic Recorder of Objects in C.
BAS
See Business Application Services.
base
The numbering system in which an
arithmetic value is represented.
base aggregate table
In SQL replication, a type of
replication target table that contains data
that is aggregated from a replication source
table. See also change aggregate table.
base attributes
A set of indexes that is assigned to
each object. All Content Manager objects
have base attributes.
baseband
A frequency band that uses the complete
bandwidth of a transmission and requires all
stations in the network to participate in
every transmission.
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Baseboard Management Controller (BMC)
A controller that monitors system
platform management events such as fan
failure and temperatore or voltage increases,
and logs their occurrence.
base card
One of the set of two cards that
comprise the VPACK or SPACK, both of which
are needed to process voice signals. See
also trunk interface card.
base class
(1) A class from which other classes or
beans are derived. A base class may itself
be derived from another base class. See also
abstract class.
(2) See parent class. See also metaclass,
abstract class.
base cluster
In systems with VSAM, a key-sequenced or
entry-sequenced file over which one or more
alternate indexes are built.
base currency
The currency in which the totals for a
channel group (which can be comprised of
channels belonging to different currencies)
are displayed.
based addressing
A form of addressing in which a data
description is associated with a storage
area by a variable address held in a
separate pointer area. This is implemented
in COBOL by BLL cells and in VS COBOL II by
the ADDRESS special register. See also
pointer.
base edition
The original edition of a project.
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baseform
Part of the set of phonetic
pronunciations associated with a grammar. In
WebSphere Voice Server, the IBM dictionary
of pronunciations is used.
baseline
(1) A reviewed and approved release of
artifacts that constitutes an agreed basis
for further evolution or development and
that can be changed only through a formal
procedure, such as change management and
configuration control. See also release.
(2) A ClearCase Unified Change Management (UCM)
object that typically represents a stable
configuration for one or more components. A
baseline identifies activities and one
version of every element that is visible in
one or more components. Developers can
create a development stream or rebase an
existing development stream from a baseline.
base locator for linkage (BLL)
In DOS/VS and OS/VS COBOL, a mechanism
used to address storage outside the working
storage of an application program.
base map
Normal BMS full-screen map that can be
used as a base for simulated windows. See
also canned map, overlay map.
base number
The part of a self-check field from
which the check digit is calculated.
Base Operating System (BOS)
The collection of programs that controls the
resources and the operations of the computer
system.
base package
The name and version of a software
package that is installed on a system.
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base pool
A storage area that contains all
unassigned main storage on the system and
whose minimum size is specified in the
system value QBASPOOL. The system-recognized
identifier is *BASE.
base project
In VisualAge RPG, a collection of files
that make up a VRPG component.
base search space
An implementation of the Product Advisor.
This style of implementation uses WebSphere
Commerce base database tables to facilitate
searching a particular category of products.
See also separate search space.
base segment
The portion of a RACF profile that
contains basic information needed to define
a user, group, or resource to RACF. Also
called RACF segment.
base set
The set of functions, including verbs,
parameters, return codes, and what-received
indications, that is supported by all
products that implement a particular
architecture. See also option set.
base state
The state of a terminal as set by CICS
before sending data to it, in the absence of
any instructions either from a user
application program or from its Program
Control Table (PCT) entry. In this state,
the terminal behaves as an ordinary (unpartitionable)
display device.
base station (BS)
An earth-based transmitting and
receiving station for cellular phones,
paging services and other wireless
transmission systems.
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base station data link controller (BDLC)
The fixed component of a mobile
computing system that serves as the
interface between the application software,
or a multisite controller, and the radio
network.
base table
(1) A table created with the CREATE
TABLE statement. Such a table has both its
description and data physically stored in
the database. See also view, declared
temporary table.
(2) In DB2 Universal Database for z/OS and
OS/390, a table that contains a LOB column
definition is also called a base table. The
actual LOB column data is not stored with
this base table. The base table contains a
row identifier for each row and an indicator
column for each of its LOB columns. See also
auxiliary table, result table, temporary
table.
base table space
In DB2 Universal Database for z/OS and
OS/390, a table space that contains base
tables.
base time
The time spent executing a particular
method. Base time does not include time
spent in other Java methods that this method
calls.
BASIC (beginner's all-purpose symbolic
instruction code)
A high-level programming language with a
small number of statements and a simple
syntax. BASIC is designed to be easily
learned and used and is widely used for
interactive applications on microcomputers.
basic assistance level
The type of displays that provides the
most assistance. Basic assistance level
supports the more common user and operator
tasks, and does not use computer terminology.
basic assurance test (BAT)
An automatic testing of a machine when
the power is switched on.
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basic authentication (BA)
An authentication method that uses a
user name and a password.
basic character
Frequently used double-byte character
that is stored in the hardware of a
DBCS-capable work station. The number of
double-byte characters that are stored in
the work station varies with the language
supported and the storage size of the work
station. A DBCS-capable work station can
display or print basic characters without
using the extended character processing
function of the operating system. See also
extended character processing, extended
character.
basic conversation
(1) An SNA LU 6.2 conversation between
two transaction programs that uses the APPC
basic conversation API. See also mapped
conversation.
(2) In APPC, a conversation between two
programs in which the sending program must
construct generalized data stream (GDS)
records for the receiving program.
basic data exchange
A file format for exchanging data on
diskettes or tape between systems or devices.
basic direct access method (BDAM)
An access method used to directly
retrieve or update particular blocks of a
data set on a direct access device.
basic disk pool
One or more storage units that are
defined from the disk units or disk-unit
subsystems that make up addressable disk
storage. Disk pools (which are also known as
auxiliary storage pools ) provide a means of
placing certain objects on specific disk
units to limit the impact of disk-media
failures and to reduce recovery time. A
basic disk pool contains both objects and
the libraries or directories that contain
the objects. Attributes such as
authorization, ownership, and spooled file
attributes are stored in the system disk
pool (also known as the system ASP ).
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basic DST capability
A dedicated service tools (DST)
capability used by a service representative
or an experienced system user that provides
access to DST functions that do not access
sensitive data.
Basic Encoding Rules (BER)
A set of rules used to encode ASN.1
values as strings of octets.
basic information unit (BIU)
In SNA, the unit of data and control
information passed between the transmission
and control layers. It consists of a request
or response header followed by a request or
response unit.
Basic Input/Output System (BIOS)
The code that controls basic hardware
operations, such as interactions with
diskette drives, hard disk drives, and the
keyboard.
basic link unit (BLU)
In SNA, the unit of data and control
information transmitted over a
communications line by data link control.
basic mapping resource map (BMS map)
A map controlling the display of input
and output data by describing where fields
are to be positioned on the screen and what
display attributes they are to have. They
are not needed for text data output. Every
BMS mapping command names a map that
contains formatting (mapping) instructions.
Each map has two forms: physical and
symbolic.
basic mapping support (BMS)
An interface between CICS and
application programs that formats input and
output display data and routes multiple-page
output messages without regard for control
characters used by various terminals.
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Basic Object Adapter (BOA)
Software that provides CORBA-compliant
services for object implementations.
basic predicate
A predicate that compares two values.
basic program
A type of EGL program part that performs
tasks without interacting with users in real
time.
basic rate interface
The means of ISDN access normally used
by private subscribers, providing two
B-channels of 64kbits per second and one
D-channel of 16kbits per second for
signaling. This is often known as 2B+D. See
also primary rate access.
Basic Recorder of Objects in C (BAROC)
The internal representation of the
defined event classes at the event server.
Basic Security Manager (BSM)
A component of VSE/ESA Version 2.4 that
is invoked by the System Authorization
Facility, and used to ensure signon and
transaction security.
basic sequential access method (BSAM)
An access method for storing or
retrieving data blocks in a continuous
sequence, using either a sequential access
or a direct access device.
Basic Telecommunications Access Method (BTAM)
An access method that permits read and
write communication with remote devices.
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Basic Telecommunications Access
Method-Extended Storage (BTAM-ES)
An IBM supplied telecommunications
access method that permits read and write
communication with remote devices.
BAT
See basic assurance test.
batch
(1) In WebSphere Commerce Payments, a
collection of payment transactions, such as
captures, credits, capture reversals, and
credit reversals, processed as a group. A
batch is submitted as a single unit to the
Acquirer's financial system. Business
guidelines regarding the use of batch
processing are developed by credit acquiring
institutions. Merchants also establish
policies that align with these guidelines.
(2) A group of records or data processing
jobs brought together for processing or
transmission.
(3) Pertaining to a group of jobs to be run
on a computer sequentially with the same
program with little or no operator action.
See also interactive, interactive.
batch accumulator
In DFU, an accumulator in which
subtotals for a field are stored. See also
total accumulator.
batch data interchange
A program that is used to extend the
facilities of CICS terminal control to
simplify further the handling of data
streams in a network.
batch device
Any device that can read serial input or
write serial output, or both, but cannot be
used to communicate interactively with the
system. Examples of batch devices are
printers, magnetic tape units, or diskette
units.
batched repository-update facility
A CICSPlex SM facility, invoked from the
CICSPlex SM end user interface, for the bulk
application of CICSPlex SM definitions to a
CMAS data repository.
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batch file
A file containing data that is to be
processed unattended.
batch job
A predefined group of processing actions
submitted to the system to be performed with
little or no interaction between the user
and the system. See also interactive job.
batch message processing program (BMP,
BMP program)
An IMS batch processing program that has
access to online databases and message
queues. BMPs run online, but like programs
in a batch environment, they are started
with job control language (JCL).
batch mode
In query management, the query mode
associated with a query instance that does
not allow users to interact with the query
commands while a procedure is running.
batch processing
A method of running a program or a
series of programs in which one or more
records (a batch) are processed with little
or no action from the user or operator. See
also interactive processing.
batch program
A program that is processed in series
with other programs and therefore normally
processes data without user interaction.
batch shell
In CICS, a shell started to handle CICS
interval control timer requests. The batch
shell is transparent to the user; each
user's program runs under its own user shell.
batch subsystem
A part of main storage where batch jobs
are processed.
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battery power unit
A source of electrical power that can be
used when the normal utility power fails.
BB
See begin bracket.
BCB
See block control byte.
BCC
See block-check character.
B-channel
See bearer channel.
BDAM
See basic direct access method.
BDF
See business description file.
BDLC
See base station data link controller.
beacon frame
A frame sent by an adapter indicating a
serious ring problem, such as a broken cable.
An adapter is beaconing if it is sending
such a frame.
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beaconing
Pertaining to an adapter in a token-ring
network that repeatedly sends a frame (beacon
message) when it is not receiving a normal
signal because of serious error, such as a
line break or power failure. The message
frame repeats until the error is corrected
or bypassed. See also beacon message.
beacon message
A message frame sent repeatedly by an
adapter indicating a serious network problem,
such as a broken cable. See also beaconing.
bean
A definition or instance of a JavaBeans
component. See also JavaBeans.
bean class
In Enterprise JavaBeans (EJB)
programming, a Java class that implements a
javax.ejb.EntityBean class or
javax.ejb.SessionBean class.
beaninfo
A Java class that provides explicit
information about the properties, events,
and methods of a companion bean class.
bean-managed messaging
A function of asynchronous messaging
that gives an enterprise bean complete
control over the messaging infrastructure.
bean-managed persistence ( BMP BMP)
Pertaining to an entity bean that
manages its own persistence. See also
container-managed persistence.
bean-managed transaction (BMT)
The capability of the session bean,
servlet, or application client component to
manage its own transactions directly,
instead of through a container.
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Bean Scripting Framework
An architecture for incorporating
scripting language functions to Java
applications.
bearer channel (B-channel)
In ISDN, a duplex channel for
transmitting data or digital voice between
the terminal and the network. The B-channel
operates at 64 kilobits per second. See also
delta channel.
bearer service
The type of service that defines how an
ISDN connection will be used. Typical bearer
services are speech telephony, 64 kilobit
per second data, and high quality speech.
BEC
See bus extension card.
BED card
See bus extension driver card.
before-image
(1) In SQL replication, the content of a
replication source-table column before it is
updated by a transaction. The content is
recorded in a change data (CD) table or in a
database log or journal. See also
after-image, after-image, before-value.
(2) A record of the contents of a data
element before it is changed. Before images
are used to backout incomplete or incorrect
changes in the event of a failure.
(3) The contents of a record in a physical
file before the data is changed by a write,
an update, or a delete operation.
before trigger
A trigger that is specified to be
activated before the defined trigger event (insert,
update, or delete operation on the table
that is specified in the trigger definition).
See also trigger activation time, after
trigger, instead of trigger.
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before-value
In Q replication, the content of a
replication source-table column before it is
updated by a transaction. See also
before-image.
begin bracket (BB)
In SNA, an indicator defining the start
of a conversation. The value of the
indicator (binary 1) in the request header
of the first request in the first chain of a
bracket denotes the start of a bracket. See
also conditional end bracket, FMH-5.
beginner's all-purpose symbolic
instruction code
See BASIC.
beginning attribute character
For a display file, the character that
precedes the first position in a field and
that defines how the data in the field is
displayed.
beginning-of-tape marker (BOT marker)
A reflective material placed on a
magnetic tape to indicate where the
recording area starts.
begin-session handler
A user-provided part of a FEPI
application that handles begin-session
processing.
behavior
(1) In object-oriented programming, the
functionality embodied within a method.
(2) The way in which managed objects, name
bindings, attributes, notifications, and
operations interact with the actual
resources that they model and with each
other.
(3) A collection of assertions that describe
the allowed states that a managed object can
assume. An assertion can be a precondition,
a postcondition, or an invariant. In
practice, the behavior is often an informal
description of the semantics of attributes,
operations, and notifications.
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below-specific protocol boundary (BSPB)
In MPTN architecture, the interface
between the common MPTN manager (CMM) and
the protocol-specific MPTN manager (PMM).
bend point
A point that is introduced in a
connection between two message flow nodes at
which the line that represents the
connection changes direction. A bend point
can be used to make node alignment and
processing logic clearer and more
effectively displayed.
BER
See Basic Encoding Rules.
BER card
See bus extension receiver card.
BEST/1 for iSeries
The capacity planner for a system. The
BEST/1 for iSeries capacity planner is a
function of the IBM Performance Tools
licensed program.
best-effort delivery
In connectionless service, the
unreliable delivery of datagrams in a
network. Information about whether the
packet was delivered is not provided to the
sender.
best-effort service
In QoS, the type of service that by
default is assigned to all traffic unless a
network policy specifies otherwise. This
traffic is not given special forwarding
treatment.
best-fit conversion
See linguistic conversion.
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bezel
A rim or surrounding part to keep
another part stationary.
BGU
See Business Graphics Utility.
BIC
See bank identifier code.
BIC Bankfile
A tape of bank identifier codes supplied
by S.W.I.F.T.
BIC Database Plus Tape
A tape of financial institutions and
currency codes, supplied by S.W.I.F.T. The
information is compiled from various sources
and includes national, international, and
cross-border identifiers.
BIC Directory Update Tape
A tape of bank identifier codes and
currency codes, supplied by S.W.I.F.T., with
extended information as published in the
printed BIC Directory.
BID
In BSC, a protocol exchange in
preparation for sending and receiving data.
The sending station sends an ENQ character
and the receiving station acknowledges
receipt of the ENQ character by sending an
ACK0 control character.
bidder
An SNA LU-LU half-session that is
defined as requesting and receiving
permission from another LU-LU half-session
to begin a bracket at the start of a session.
See also first speaker.
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bidder session
See contention-loser session. See also
contention-winner session.
bi-di
See bidirectional.
bidirectional (bi-di)
Pertaining to scripts such as Arabic and
Hebrew that generally run from right to left,
except for numbers, which run from left to
right. This definition is from the
Localisation Industry Standards Association
(LISA) Glossary.
bidirectional language
A language such as Arabic and Hebrew
whose general flow of text proceeds
horizontally from right to left, but numbers,
English, and other left-to-right language
text are written from left to right.
bidirectional replication
In Q replication, a replication
configuration in which changes that are made
to one copy of a table are replicated to a
second copy of that table. Changes that are
made to the second copy are replicated back
to the first copy.
big endian
A format for storage or transmission of
binary data in which the most significant
bit (or byte) is placed first. See also
little endian.
bilingual command list
A command list written in a combination
of REXX and the NetView command list
language.
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bin
An enclosure on a printer that contains
source or destination media, including
paper, foils, labels, card stock, or
microfilm.
binary
(1) Pertaining to a selection, choice,
or condition that has two possible values.
(2) In DB2 UDB for iSeries, pertaining to a
data type indicating that the data is a
binary number with a precision of 15 (halfword)
or 31 (fullword) bits.
(3) Pertaining to a system of numbers with a
base of two . The binary digits are 0 and 1.
binary digit (bit)
The smallest unit of computer
information, which has two possible states
that are represented by the binary digits 0
or 1.
binary file
A file that contains codes that are not
part of the ASCII character set. Binary
files can utilize all 256 possible values
for each byte in the file.
binary floating-point number
The conceptual form of a numeric value
that contains a significand and a signed
exponent. The number's numeric value is the
signed product of the number's significand
and 2 raised to the power of the number's
exponent.
binary format
Representation of a decimal value in
which each field must be 2 or 4 bytes long.
The sign (+ or -) is in the far left bit of
the field, and the number value is in the
remaining bits of the field. Positive
numbers have a 0 in the sign bit and are in
true form. Negative numbers have a 1 in the
sign bit and are in twos complement form.
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binary integer
A basic data type that can be further
classified as small integer or large
integer.
binary item
Numeric data that is represented
internally as a number in the base 2
numbering system; internally, each bit of
the item is a binary number with the sign as
the far left bit.
binary large object ( BLOB BLOB)
(1) A data type used by databases for
large, non-text objects.
(2) A data type that contains a sequence of
bytes that can range in size from 0 bytes to
2 gigabytes less 1 byte. This string does
not have an associated code page and
character set. BLOBs can contain image,
audio, and video data. See also character
large object.
(3) A block of bytes of data (for example,
the body of a message) that has no
discernible meaning, but is treated as one
solid entity that cannot be interpreted.
binary operator
A symbol representing an operation to be
performed on two data items, arrays, or
expressions. See also unary operator.
binary stream
In the C language, a sequence of
characters that corresponds on a one-to-one
basis with the characters in the file. No
character translation is performed on binary
streams.
binary string
(1) In REXX, a literal string expressed
using a binary (base 2) representation of a
value. The binary representation is a
sequence of zero or more binary digits (the
characters 0 or 1) enclosed in quotation
marks and followed by the character b.
(2) A sequence of bytes that is not
associated with a CCSID. For example, the
BLOB data type is a binary string. See also
coded character set identifier.
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binary synchronous communication ( BSC
BSC)
A data communications line protocol that
uses a standard set of transmission control
characters and control character sequences
to send binary-coded data over a
communications line.
binary synchronous communications
equivalence link support (BSCEL support)
The intersystem communications function
(ICF) support on the iSeries system that
provides binary synchronous communications
with other computers using BSC protocols.
binary tree server topology
A topology that connects servers in a
pyramid fashion: the top server connects to
two servers below it, each of which connects
to two servers below it, and so on.
Information travels down the pyramid and
then back up.
bind
(1) To convert the output from the DBMS
precompiler to a usable control structure (which
is called a package or an application plan).
During the process, access paths to the data
are selected and some authorization checking
is performed. See also application plan,
package, activate, binder, binding.
(2) To create a program, which can be run,
by combining one or more modules created by
an Integrated Language Environment (ILE)
compiler.
(3) To relate an identifier to another
object in a program; for example, to relate
an identifier to a value, an address or
another identifier, or to associate formal
parameters and actual parameters.
(4) To establish a connection between
software components on a network using an
agreed-to protocol. In Web services, the
bind operation occurs when the service
requestor invokes or initiates an
interaction with the service at run time
using the binding details in the service
description to locate, contact, and invoke
the service.
(5) To convert the output from the SQL
compiler to a usable control structure, such
as an access plan, application plan, or
package. During the bind process, access
paths to the data are selected and some
authorization checking is performed.
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BIND command
In SNA, a command used to start a
session between two logical units, and to
define the characteristics of that session.
See also UNBIND command.
bind control part
In EGL, a build part that describes how
to access a DB2 database from one or more
programs. The information in this part is
used at generation time and preparation
time, but only when the target system is
CICS for MVS.
binder
(1) The system component that creates a
bound program by packaging Integrated
Language Environment (ILE) modules and
resolving symbols passed between those
modules. See also bind.
(2) A virtual container for documents that
proceed through a Lotus Workflow job. A
binder is routed from one activity to the
next until the job is completed. A binder
must contain a cover document and a main
document. It may also contain other
documents needed for the completion of the
activity.
binder language
A small set of commands (STRPGMEXP,
EXPORT, and ENDPGMEXP) that defines the
external interface (signature) for a service
program. These commands cannot be run alone
and are of the source type BND.
binder status
In Lotus Workflow, the state of a binder
as it moves through a job. In Notes, each
binder's status is listed with the activity
in one of the available views in the
application database. In the Web interface,
a binder's status displays when the mouse
pointer pauses over an icon that looks like
an binder.
bind file
A file is produced by the precompiler
when the PRECOMPILE command or the
respective API is used with the BINDFILE
option.
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binding
(1) The creation of a model element or
source code from a template by supplying
arguments for the parameters of the template.
(2) The process of attaching a collaboration
object to a port, which is a variable that
represents a business object. These business
objects are sent to or received from the
collaboration object. A collaboration object
can be bound to connectors, to other
collaboration objects, or to external
processes (called access clients). See also
port.
(3) A rule created by combining profilers
and actions, so that different actions can
be performed based on the differing
attributes of the Web site visitors.
(4) The process of creating a program by
packaging Integrated Language Environment (ILE)
modules and resolving symbols passed between
those modules. See also bind.
binding directory
A list of names of modules and service
programs that may be needed when creating an
ILE program or service program. A binding
directory is not a repository of the modules
and service programs. Instead, it allows
them to be referred to by name and type.
bind race
In SNA, a situation where two or more
logical units (LUs) send bind requests to
each other at the same time.
bind request
A request to establish a connection
between systems or logical units.
bind-time security
See session security. See also link
security, user security.
BIOD
See block input/output daemon.
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BIOS
See Basic Input/Output System.
BIOS flash diskette
A diskette that allows a computer
operator to reinstall the BIOS (basic
input-output system) without having to
replace the BIOS chip, for example, if the
BIOS has become corrupted, or to update the
BIOS to a new version. Frequently the BIOS
flash code is available for download from a
support Web site to be saved by the user to
a diskette. basic input/output system See
also flash BIOS, boot block jumper.
bi-polar with 8-zero substitution (B8ZS)
A T1 line code required for 64-kilobit
channels such as ISDN.
bit
See binary digit.
bit data
Data with character type CHAR or VARCHAR
that is not associated with a coded
character set and therefore is never
converted.
bitmap
(1) A representation of an image by an
array of bits.
(2) A coded representation in which each
bit, or group of bits, represents or
corresponds to an item; for example, a
configuration of bits in main storage in
which each bit indicates whether a
peripheral device or a storage block is
available or in which each group of bits
corresponds to one pixel of a display image.
(3) A pixmap with a depth of one bit plane.
Stipple is a bit map used to tile a region.
bit map
In temporary storage, a control block
used by intrapartition transient data to
show the VSAM control intervals (or BSAM
tracks) that have been used and are
available. It is updated whenever a control
interval or track is assigned to or released
from a destination.
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bitmapped message
A variable-length transaction in which
each bit in an array of bits indicates the
presence or absence of a data field within
the transaction.
bit mask
A pattern of bits designed to be
logically compared to an existing bit value.
The mask pattern allows only certain desired
parts of the existing bit value to appear in
the result of the comparison.
bits per inch (bpi)
The density, measured in number of bits
per inch, at which information can be stored
on magnetic tape.
bits per second (bps)
In serial transmission, the
instantaneous bit speed with which a device
or channel transmits a character.
bit string
A series of bits consisting of the
values 0 and 1.
BIU
See basic information unit.
blade
A component that provides
application-specific services and components.
blank after
In RPG, an output specification option
that changes the contents of a field so that
it contains either zeros (if it is a numeric
field) or blanks (if it is a character
field) after that field is written to the
output record.
blind transfer
A type of call transfer in which the
call is routed to another extension and the
original call is terminated. No check is
made to determine if the transferred call is
answered or if the number is busy. See also
screened transfer.
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BLL
See base locator for linkage.
BLOB
See binary large object.
BLOB domain
The message domain that includes all
messages that have content that cannot be
interpreted and subdivided into smaller
sections of information. Messages in this
domain are processed by the BLOB parser. See
also IDoc domain, JMS domain, MRM domain,
XML domain.
BLOB parser
A program that interprets a bit stream
or message tree that represents a message
that belongs to the BLOB domain, and
generates the corresponding tree from the
bit stream on input, or a bit stream from
the tree on output.
block
(1) A set of consecutive pages on disk.
(2) A set of contiguous pages in a buffer
pool.
(3) A string of data elements that is
recorded or transmitted as a unit.
(4) A sequence of text, commands, or records
that are read, written, or processed as a
unit.
block based I/O
A database manager method of reading
contiguous data pages from disk into
contiguous portions of memory. See also
scattered read.
block-check character (BCC)
The BSC transmission control character
that is used to determine if all of the bits
that were sent were also received.
block control byte (BCB)
In a multileaving telecommunications
access method, a control character used for
transmission block status and sequence count.
block copy
In SEU, to copy two or more adjoining
source records from one part of a source
member to another part, or from one source
member to another.
block decryption
Symmetric algorithms that decrypt a
block of data at one time.
block delete
In SEU, to delete two or more adjoining
source records from a source member.
block edit function
In AFP Utilities, a function that moves,
copies, or removes all elements defined in a
specified scope on the image area at one
time.
blocked signal
In POSIX, a condition that prevents a
signal-handling action associated with a
signal from being performed. See also
unblocked signal.
block encryption
Symmetric algorithms that encrypt a
block of data at one time.
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block exclude
In SEU, to exclude two or more adjoining
records from the Edit or Browse display.
block factor
See block size. See also block factor.
block fetch
A function of DB2 Universal Database
that retrieves (or fetches) a large set of
rows together. Using block fetch can
significantly reduce the number of messages
that are sent across the network. Block
fetch applies only to cursors that do not
update data. See also blocking.
block identifier (BID)
An entry that is stored along with a key
value in the leaf node of a block index.
This identifier references a particular
block in a multidimensional clustering table.
block index
An index that is structured in the same
manner as a traditional record identifier (RID)
index, except that at the leaf level, keys
point to a block identifier (BID) instead of
an RID.
blocking
(1) An option that allows caching of
multiple rows of information by the
communications subsystem so that each FETCH
statement does not require the transmission
of one row for each request across the
network. This option is recommended when
using SQL replication. See also block fetch.
(2) The process of combining two or more
records into one block. See also deblocking.
blocking factor
The number of records in a block. A
blocking factor is calculated by dividing
the size of the block by the size of the
record.
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block input/output daemon (BIOD)
In the Network File System (NFS), a
daemon that performs parallel read/write
requests on behalf of an NFS client.
block-level data sharing
A kind of IMS data sharing that allows
multiple subsystem access to the same
database, controlled by means of a lock
manager. Sharing is at the physical-block
level for ISAM or OSAM databases and at the
control-interval level for VSAM databases.
block-level sharing
A method of sharing data among IMS
systems so that multiple application
programs can access and update data
concurrently between multiple IMS subsystems.
See also database-level sharing.
block lock
The locking of a block within a
multi-dimensional clustering environment.
block map
A bitmap that contains an array of block
states, one for each block in the
multidimensional clustering table. Each
entry has eight bits, four of which are used:
(a) In use, (b) Load, (c) Constraint
pending, and (d) Refresh pending.
block move
In SEU, to move two or more adjoining
source records from one part of a source
member to another part, or from one source
member to another.
block overlay
In SEU, to overlay two or more adjoining
records with other records defined by the
Copy or Move line command.
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block size
Specifies the number of pages in a block.
It is equal to the extent size. See also
block size.
block statement
In the C or C++ languages, a group of
data definitions, declarations, and
statements appearing between a left brace
and a right brace that are processed as a
unit. The block statement is considered to
be a single, C-language statement. In Ada
language, a block statement is a single
statement that may contain a sequence of
statements. It may also include a
declarative part, and exception handlers;
their effects are local to the block
statement.
BLU
See basic link unit.
Bluetooth
Technology specification created for
short-range (up to 10 meters) wireless
connection using low-cost transceiver chips
to be embedded in mobile PCs, smart phones,
and other portable devices. Provides three
voice and data channels via a one-to-one
connection with built-in encryption and
verification.
BMC
See Baseboard Management Controller.
BMP
(1) See batch message processing
program.
(2) See bean-managed persistence.
BMP program
See batch message processing program.
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BMS
See basic mapping support.
BMS map
See basic mapping resource map.
BMS map definition
The use of macros (DFHMSD, DFHMDI, and
DFHMDF) to define the size, shape, position,
potential content, and properties of BMS map
sets, maps, and fields within maps.
BMS message routing
The routing of data to one or more
terminals other than the originating
terminal.
BMS page building
The building and display of multiple,
logically-connected pages of mapped or text
data.
BMS text building
The formatting of unmapped text data.
BMT
See bean-managed transaction.
bnf
See Backus-Naur Form.
BNI
See boundary node identifier.
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BNN
See boundary network node.
BOA
See Basic Object Adapter.
BOD
See Business Object Document.
body
The second part of an IM-ASPDU. It
contains the actual application data or the
message text that the IM-AMPDU transfers.
Booch methodology
An object-oriented methodology that
helps users design systems using the
object-oriented paradigm.
bookmark
A customizable, graphical link to
databases, views, documents, Web pages, and
newsgroups.
Boolean
Characteristic of an expression or
variable that can only have a value of true
or false.
Boolean data
In COBOL, a category of data items that
are limited to a value of 1 or 0.
Boolean literal
In COBOL, a literal composed of a
Boolean character enclosed in double
quotation marks and preceded by a B; for
example, B "1" .
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Boolean operator
In REXX, an operator each of whose
operands and whose result take one of two
values (0 or 1).
boot block jumper
A jumper that is moved or removed from
the system board during boot block recovery
to enable the BIOS to be updated through the
use of a BIOS flash diskette. See also BIOS
flash diskette, flash BIOS.
BOOTP
See Bootstrap Protocol.
bootstrap data set ( BSDS BSDS)
(1) A VSAM data set that contains an
inventory of all active and archived log
data sets known to WebSphere MQ for z/OS,
and a wrap-around inventory of all recent
WebSphere MQ for z/OS activity. The BSDS is
required to restart the WebSphere MQ for
z/OS subsystem.
(2) A VSAM data set that contains name and
status information for DB2 Universal
Database for z/OS and OS/390, as well as
relative-byte address-range specifications
for all active and archive log data sets. It
also contains passwords for the DB2
Universal Database for z/OS and OS/390
directory and catalog, and lists of
conditional restart and checkpoint records.
bootstrapping
The process by which an initial
reference of the naming service is obtained.
The bootstrap setting and the host name form
the initial context for Java Naming and
Directory Interface (JNDI) references.
Bootstrap Protocol (BOOTP)
A protocol that allows a client to find
both its Internet Protocol (IP) address and
the name of a file from a server on the
network.
border
A public address that forms a border
between a trusted and an untrusted network.
It describes the IP address as an actual
interface on the system. The system needs to
know the "type" of address you are defining.
For example, your PCs IP address is trusted,
but your server's public IP address is
border.
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border node
An APPN network node that interconnects
APPN networks having independent topology
databases in order to support LU-LU sessions
between these networks.
border router
In Internet communications, a router,
positioned at the edge of an autonomous
system, that communicates with a router that
is positioned at the edge of a different
autonomous system.
border system
A system that exists within a trusted
system but communicates between trusted and
untrusted systems. A border system prevents
security from being compromised.
BOS
See Base Operating System.
bot
A program used on the Internet that
performs a repetitive function such as
searching for information.
both field
A field that can be used for either
input data or output data.
BOT marker
See beginning-of-tape marker.
bottleneck
A place in the system where contention
for a resource is affecting performance.
bottom margin
On a page, the space between the body or
the running footing, if any, and the bottom
edge of the page.
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bottom-up development
In Web services, the process of
developing a service from an existing
artifact such as a Java bean or enterprise
bean rather than a Web Services Definition
Language (WSDL) file. See also top-down
development.
bottom-up mapping
In Enterprise JavaBeans (EJB)
programming, an approach for mapping
enterprise beans to database tables, in
which the schema is first imported from an
existing database and then enterprise beans
and mappings are generated.
boundary class
In performance profiling, a class that
is normally excluded in the filtering
criteria, but which is directly invoked by
the classes that are included as filters.
boundary network node ( BNN BNN)
In SNA, a subarea node that provides
protocol support for adjacent peripheral
nodes, for example, transforming network
addresses to local addresses and vice versa,
and providing session-level support for
these peripheral nodes. In XRF, the point at
which terminal sessions are switched from
the failing active system to the new active
system. The communication controller (or, in
CICS/VSE, an XSWITCH mechanism) at the BNN
must be able to operate in an XRF
configuration.
boundary node identifier (BNI)
The MAC address that identifies a
subarea boundary node as the source or
destination of frames carried over the
portion of a BAN connection between the
boundary node and the boundary access node
(BAN). All frames sent by a BAN to the
boundary node have their destination MAC
address set to the BNI, and all frames sent
by a boundary node to a BAN have their
source MAC address set to the BNI.
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boundary violation
In COBOL, an attempt to write beyond the
externally defined boundaries of a
sequential file.
bound program
An OS/400 object that combines one or
more modules created by an Integrated
Language Environment (ILE) compiler.
bound role
A role that has a concrete element
attached. A bound role can be a class, an
operation, any classifier, model element,
primitive type or other concrete element.
Roles are in the scope and context of a
collaboration.
box
A line enclosure that forms a rectangle
around text or a table.
bpi
See bits per inch.
bps
See bits per second.
bracket
In SNA, one or more chains of request
units and their responses, representing a
complete transaction, exchanged between two
session partners.
bracketed DBCS
A character string in which each
character is represented by 2 bytes. The
character string starts with a shift-out (SO)
character and ends with a shift-in (SI)
character.
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bracket protocol
(1) In SNA, a data flow control protocol
in which exchanges between two session
partners are achieved through the use of
brackets, with one partner designated at
session activation as the first speaker and
the other as the bidder. The bracket
protocol involves bracket initiation and
termination rules.
(2) In SNA, a protocol that prevents the
interruption of a transaction between CICS
and a logical unit. A bracket can also
delimit conversations between CICS and the
logical unit or merely the transmission of a
series of data chains in one direction.
Bracket protocol is used when CICS
communicates with specific logical units.
branch
(1) An object that specifies a linear
sequence of versions of an element. Each
branch is an instance of a branch type
object.
(2) In the CVS team development environment,
a separate line of development where changes
can be isolated. When a programmer changes
files on a branch, those changes do not
appear on the main trunk or other branches.
branch downlink
A link that a branch network node
defines to a node that is located in the
branch (either an end node or another branch
network node that appears to be an end
node). A branch network node acts as a
network node over a branch downlink. Each
end node in the branch receives network node
services from a branch network node over one
of that branch network node's downlinks. See
also branch uplink.
branch exchange
A switching system that provides
telephone communication between branch
stations and external networks.
branch instruction
An instruction that changes the sequence
of instructions processed in a computer
program. The sequence of instructions
continues at the address specified in the
branch instruction.
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branch network node
An APPN network node that implements the
Branch Extender architecture. A branch
network node appears to be an end node to
the backbone network but acts as a network
node to the branch network. There may be
multiple branch network nodes in a branch,
and an end node may receive network node
services from any of these branch network
nodes.
branch uplink
A link that a branch network node
defines to a node that is located in the
backbone network or to another branch
network node in the same branch. A branch
network node acts as an end node over a
branch uplink, and a branch network node
receives network node services from a
network node over one of the branch network
node's uplinks. See also branch downlink.
brand
In WebSphere Commerce Payments, the
Cassette object for all of the WebSphere
Commerce Payments cassettes (for example,
Cassette for VisaNet and Cassette for
Paymentech). Each financial transaction for
a WebSphere Commerce Payments cassette is
associated with a particular brand (for
example, MasterCard or VISA). Each account
with a financial institution can be
configured to support one or more brands.
breach value
The value at which a service level
objective (SLO) is considered as not being
met. A service level agreement (SLA)
violation occurs if a breach value for one
or more of its SLOs is exceeded. See also
service level objective.
break delivery
The method of delivering messages to a
message queue in which the job associated
with that message queue is interrupted as
soon as the message arrives.
break field
In AFP Utilities, a field that causes a
page break. When the Print Format Utility
encounters a record with a value that is not
equal to that of the previous record, a page
break occurs.
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breakout session
A short session that breaks away from a
LearningSpace - Virtual Classroom main
course session. For example, an instructor
might suggest that the class break up into
smaller groups to discuss in more detail a
particular topic introduced during the main
session.
breakpoint
(1) A temporary marker that a programmer
sets in source code so that execution can be
interrupted by external intervention or by a
monitor program such as a debugger.
(2) A place in a program (specified by a
command or a condition) where the system
stops the processing of that program and
gives control to the display station user or
to a specified program.
breakpoint program
For a batch job, a user program that can
be called when a breakpoint is specified.
bricks and mortar
Pertaining to a traditional,
non-Internet-based company. This definition
is from the Localisation Industry Standards
Association (LISA) Glossary.
bridged local area network
A collection of individual local area
networks interconnected by medium access
control (MAC) bridges.
bridge identifier
An 8-byte field, used in a spanning tree
protocol, composed of the MAC address of the
port with the lowest port identifier and a
user-defined value.
bridge interface
A node and a server that run a core
group bridge service.
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bridging
In LANs, the forwarding of a frame from
one LAN segment to another. The destination
is specified by the medium access control (MAC)
sublayer address encoded in the destination
address field of the frame header.
British Approvals Board for
Telecommunications
The British standards organization
responsible for approval of equipment to be
attached to the public-switched telephone
network (PSTN).
British thermal unit (Btu)
The amount of heat required to raise a
pound of water by 1 degree Fahrenheit.
British thermal unit per hour (Btu/hr)
An English unit of measure for heat
produced in one hour.
BRMS
See Backup Recovery and Media Services.
broadband
A communication channel that uses a wide
frequency range divided into narrower bands
that can be made available to different
users for the simultaneous transmission of
different signals (such as voice, video, and
data). A broadband is capable of
higher-speed data transmission than a
voice-grade channel.
broadband LAN
A local area network in which data are
encoded, multiplexed, and transmitted with
modulation of carriers. A broadband LAN
consists of more than one channel.
broadcast
The simultaneous transmission of the
same data to all nodes connected to a
network. See also multicast.
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broadcast address
In communications, a station address (eight
1's) reserved as an address common to all
stations on a link.
broadcast and unknown server
A server that provides necessary
frame-forwarding and broadcast-related
services to its clients. Each local area
network (LAN) emulation domain must contain
a broadcast and unknown server.
broadcast e-mail
E-mail that is simultaneously sent to
multiple recipients.
broadcasting
The sending of a message to everyone on
the network. See also multicasting.
broadcast job
A job that runs on all clones at once.
Like any other job, it is handled by the
scheduler.
broadcast join
A join in which all partitions of a
table are sent to all database partitions.
broadcast meeting
(1) In Sametime, a broadcast
presentation or demo.
(2) In Notes, a meeting about which invitees
are notified; they do not need to respond to
the invitation. This option is useful when
individual response will not affect the
occurrence of the meeting.
broadcast message
A message sent to all workstations.
broadcast storm
Excessive congestion and frame loss
caused by heavy broadcast traffic on a LAN.
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broker
A set of execution processes that host
one or more message flows. See also message
flow.
broker archive
A file that is the unit of deployment to
the broker that can contain any number of
compiled message flow and message set files
and a single deployment descriptor. A
separate broker archive file is required for
each configuration that is deployed.
broker archive file (bar file)
The unit of deployment to the broker;
also known as a bar file. It contains any
number of compiled message flows (.cmf),
message sets (.dictionary), and a single
deployment descriptor. It can also contain
any additional files that you might need as
long as the extension does not overlap the .cmf
and .dictionary extensions.
broker domain
A collection of brokers that share a
common configuration, together with the
Configuration Manager that controls them.
broker schema
A symbol space that defines the scope of
uniqueness of the names of resources defined
within it. The resources are message flows,
ESQL files, and mapping files.
browse
(1) To view information catalog objects
that are grouped by subject. See also search.
(2) In message queuing, to use the MQGET
call to copy a message without removing it
from the queue.
browse cursor
In message queuing, an indicator used
when browsing a queue to identify the
message that is next in sequence.
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browser
(1) A client program that initiates
requests to a Web server using Hypertext
Transfer Protocol (HTTP) and displays the
information that the server returns.
(2) A function in DB2 Net Search Extender
that enables you to display text on a
computer screen.
(3) A program that lets users look at data
but not change it.
browser thread
In Q replication, a Q Apply program
thread that gets messages from a receive
queue and passes the messages to one or more
agent threads to be applied to targets.
browse token
Identifier of a particular browse of BTS
objects within a CICS region. The same token
returned on a STARTBROWSE command must be
supplied on the corresponding GETNEXT and
ENDBROWSE commands. CICS discards it after
the ENDBROWSE.
brute force collision
A programming style that relies on
computing power to try all the possibilities
with a known hash until the solution is
found.
BS
See base station.
BSAM
See basic sequential access method.
BSC
See binary synchronous communication.
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BSC 3270 device emulation
A function of the operating system that
allows a server to appear to a BSC host
system as a 3274 Control Unit.
BSCEL support
See binary synchronous communications
equivalence link support.
BSDS
See bootstrap data set.
BSM
See Basic Security Manager.
BSPB
See below-specific protocol boundary.
BTAM
See Basic Telecommunications Access
Method.
BTAM-ES
See Basic Telecommunications Access
Method-Extended Storage.
BTS
(1) See business transaction services.
(2) See CICS business transaction services.
BTS activity
One part of a process managed by CICS
BTS. Typically, an activity is part of a
business transaction.
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BTS-set
The set of CICS regions across which
related BTS processes and activities may
execute.
Btu
See British thermal unit.
Btu/hr
See British thermal unit per hour.
bucket
One or more fields that accumulate the
result of an operation.
buffer
(1) A storage area used by MERVA
programs to store a message in its internal
format. A buffer has an 8-byte prefix that
indicates its length.
(2) An area of storage that compensates for
the different speeds of data flow or timings
of events by temporarily holding a block of
data that is waiting to be processed or
written to an I/O device.
buffer address
In 3270 data stream, the address of a
location in the character buffer (screen
image).
buffer list
In VTAM, a contiguous set of control
blocks (buffer list entries) that allow an
application program to send function
management data (FMD) from a number of
discontiguous buffers with a single SEND
macroinstruction.
buffer manipulator
A process that is used in backup and
restore operations to read from or write to
the database.
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buffer pool
(1) An area of memory into which data
pages are read, modified, and held during
processing.
(2) An area of main storage used for
WebSphere MQ for z/OS queues, messages, and
object definitions.
build
(1) In the Application Development
Manager feature of the Application
Development ToolSet licensed program, the
procedure that processes a part into a
program.
(2) To create or modify resources, usually
based on the state of other resources. A
Java builder converts Java source files into
executable class files, for example, and a
Web link builder updates links to files
whose name or location has changed.
(3) The process during which a ClearCase
build program (clearmake, clearaudit, or
omake) produces one or more derived objects.
This may involve actual translation of
source files and construction of binary
files by compilers, linkers, text formatters,
and so on. A system build consists of a
combination of actual target rebuilds and
build avoidance.
build avoidance
The ability of a ClearCase build program
to fulfill a build request by using an
existing derived object instead of creating
a new one by executing a build script. The
build program can reuse a derived object
currently in the view or wink in a derived
object that exists in another view. The
process by which the build program decides
how to produce a derived object is called
configuration lookup.
build client
A client system that uses a build server
to perform a build.
build descriptor option
In a build descriptor part, a property
that helps control generation or preparation.
build descriptor part
An EGL part that controls the generation
process through option-and-value pairs that
specify how to generate and prepare output.
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builder
A module in CICS that, in conjunction
with other builders, makes the autoinstall
process possible, allows the terminal
control table (TCT) to be changed
dynamically on a running CICS system, and
reduces the times needed for warm and
emergency restart on systems that use
autoinstall.
build file
In EGL, an XML file that contains any
number of build parts, which determine how a
program is generated and prepared. The file
may import other build files. The file name
extension is .eglbld.
build part
In EGL, a unit of declaration that
specifies a variety of processing
characteristics. The kinds of build parts
are build descriptor parts, linkage options
parts, resource associations parts, bind
control parts, and link edit parts.
build path
The path that is used during compilation
of Java source code, in order to find
referenced classes that reside in other
projects.
build plan
An XML file that defines the processing
necessary to build generation outputs and
that specifies the machine where processing
takes place.
build process
In the Application Development Manager
feature of the Application Development
ToolSet licensed program, the procedure that
determines which parts of an application
have changed, and based on the relationship
between those parts, compiles them in the
correct order.
build report
In the Application Development Manager
feature of the Application Development
ToolSet licensed program, a report that
describes the results of the build process.
This report can be printed or viewed on a
display.
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build script
In Enterprise Developer, a file that is
used by a build server to transform one set
of files into another. A build script may be,
for example, a pseudo-JCL script, a Java
compiler, or a REXX script.
build server
A server system that client systems use
to perform builds. A build server receives
requests from build clients to create
executable files from source code sent from
the build clients.
build style
A set of actions that provide push and
build operations for iSeries projects.
built-in format
Application data in a message for which
the queue manager defines the meaning.
built-in function
(1) In C and CL, a predefined function,
such as a commonly used arithmetic function
or a function necessary to high-level
language compilers (for example, a function
for manipulating character strings or
converting data). It is automatically called
by a built-in function reference.
(2) In CICS, the field de-editing function
provided by the EXEC CICS BIF DEEDIT command.
The BIF DEEDIT command removes alphabetic
and special characters from an EBCDIC data
field, and right-justifies the remaining
digits, padding to the left with zeros as
necessary.
(3) A strongly typed, high-performance
function that is integral to DB2 Universal
Database. A built-in function can be
referenced in SQL statements anywhere that
an expression is valid.
(4) In REXX, a function that is supplied by
a language. These functions, defined as part
of the REXX language, include character
manipulation, conversion, and information
functions.
built-in function reference
In CL, a built-in function name, having
an optional, and possibly empty, argument
list that holds the value returned by the
built-in function.
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built-in node
A message flow node that is supplied by
the product. A number of supplied nodes
provide basic processing such as input and
output.
bulk decryption
See block decryption.
bulk discovery
A type of autodiscovery in which a
program is run that has access to the
resources that are being discovered. The
program output provides information about
those resources.
bulk encryption
See block encryption.
bulkload
A command line utility that is used for
bulk-loading large amounts of data in LDIF
format.
bulk loading
A performance feature of VS COBOL II
that supports the loading of selected
library routines into the CICS region at
CICS initialization time, or into the LPA at
MVS initialization time or SVA at VSE
initialization time.
bulletin board
The mechanism by which the Tivoli
Management Framework and Tivoli applications
communicate with Tivoli administrators. The
bulletin board collects notices in notice
groups. Administrators can access the
bulletin board from the Tivoli desktop. The
bulletin board is an audit trail for
important operations that the administrators
perform.
bundle
(1) A set of tokens that are transferred
between nodes in a simulation as a complete
group.
(2) A group of journal entries that are
deposited together by the system.
(3) Catalog merchandise that provides
single-click function for referring to
multiple items. More formally, a bundle is a
composite catalog entry consisting of at
least one code.
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burst
In AFP support, to separate
continuous-forms paper into separate sheets.
bus
(1) Interconnecting messaging engines
that manage bus resources
(2) A facility for transferring data between
several devices located between two end
points, only one device being able to
transmit at a given moment.
(3) One or more conductors used for
transmitting signals or power.
bus expansion
An expansion unit that attaches to a
system unit for the purpose of increasing
the number of buses on the system and which
allows for additional I/O processor cards to
be attached.
bus extension card (BEC)
The b
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