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-
AAL
- See ATM adaptation layer.
-
AARP
- See AppleTalk
Address Resolution Protocol.
-
ABAP/4
- See Advanced Business Application Programming/4.
-
ABARS
- See aggregate backup and recovery support.
-
abbreviated combined relation condition
- In COBOL, a combined condition that omits a common subject or a common
subject and common relational operator from a consecutive sequence of relational
conditions. For example, (A and B) or (A and C) can be abbreviated A and (B
or C).
-
abbreviated installation
- A process
in which the verification and i5/OS error recovery part of installation is
done without restoring the saved version of the operating system. See also
normal installation.
-
abbreviated trace
- Optional format
for CICS trace entries which summarizes the information in full trace entries.
See also full trace.
-
abbreviation
- A shortened form of
a word or phrase that represents the full form of the term.
-
ABC
- See activity
based costing.
-
abend
- See abnormal end of task.
-
abend reason code
- A 4-byte hexadecimal
code that uniquely identifies a problem with a program that runs on z/OS.
-
ABLE
- See Agent
Building and Learning Environment.
-
ABLE Rule Language (ARL)
- A rule-based
programming language that is used to express business logic outside of program
logic. ARL provides tight integration with Java objects, and the tooling provided
with ABLE is based on the Eclipse platform.
-
ABLE Rules Engine
- A technology of
the IBM Autonomic Computing initiative that provides a set of fast, reusable,
and scalable learning and reasoning components that capture and share individual
and organizational knowledge, correlate events, and apply policies to take
the appropriate action.
-
ABM
- See activity
based management.
-
ABME
- See asynchronous
balanced mode extended.
-
abnormal end of task (abend)
- The
termination of a task, job, or subsystem because of an error condition that
recovery facilities cannot resolve during execution.
-
abnormal termination
- (1) An exit that
is not under program control, such as a trap or a segmentation violation.
- (2) A system failure or operator action that causes a job to end
unsuccessfully.
-
abort
- In data communications, a function
called by a sending primary, secondary, or combined station that causes the
recipient to discard and ignore all bit sequences transmitted by the sender
since the preceding flag sequences or to discard and ignore all data transmitted
by the sender since the previous checkpoint.
-
absolute address
- An address that,
without the need for further evaluation, identifies a storage location or
a device.
-
absolute mode
- In storage management,
a backup copy group mode that specifies that a file is considered for incremental
backup even if the file has not changed since the last backup. See also modified mode.
-
absolute path
- The full path name
of an object. Absolute path names begin at the highest level, or root directory
(which is identified by the forward slash (/) or backward slash (\) character).
See also relative path.
-
absolute path name
- A string of characters
used to refer to an object, starting at the highest level (or root) of the
directory hierarchy. The absolute path name must begin with a slash (/), which
indicates that the path begins at the root. See also relative path name.
-
absolute positional pattern
- In REXX,
the part of a parsing template that allows a string to be split by the specification
of numeric positions. A positional pattern has no sign or has an equal sign.
-
absolute time
- A time relative to
a selected previous time from which the time scale (or measurement of time)
begins. For example, if you want to start a batch job using absolute time
and the time scale begins at midnight, specifying an absolute time of 07:00
would mean that the batch job runs at 7 a.m. If the timescale begins at 9
a.m. with an absolute time of 07:00, the batch job would run at 4 p.m.
-
absolute value
- The numeric value
of a number regardless of its algebraic sign (positive or negative).
-
abstract class
- (1) In object-oriented
programming, a class that represents a concept; classes derived from it represent
implementations of the concept. An object cannot be constructed from an abstract
class; that is, it cannot be instantiated. See also parent class, base class, concrete class.
- (2) A class with at least one pure virtual function
that is used as a base class for other classes.
-
abstract code unit (ACU)
- A measurement
used by the z/OS XL C/C++ compiler for judging the size of a function. The
number of ACUs that comprise a function is proportional to its size and complexity.
-
abstract data type
- A mathematical
model that includes a structure for storing data and operations that can be
performed on that data. Common abstract data types include sets, trees, and
heaps.
-
abstraction
- (1) A data type with a private
representation and a public set of operations.
- (2) The creation of
a view or model that suppresses unnecessary details to focus on a specific
set of details of interest.
-
abstraction relationship
- In UML modeling,
a dependency relationship that connects model elements, or sets of model elements,
that represent the same concept at different levels of abstraction, or from
different viewpoints. See also dependency relationship.
-
abstract schema
- Part of the deployment
descriptor for an entity bean that is used to define the bean's relationships,
persistent fields, or query statements.
-
abstract sensor value
- An abstract
representation of the typed data values that a class of sensor interfaces
can potentially provide. The actual data values that a sensor provides are
sensor values.
-
abstract syntax
- A data specification
that includes all distinctions that are needed in data transmissions, but
that omits (abstracts) other details such as those that depend on specific
computer architectures. See also transfer syntax.
-
Abstract Syntax Checker (ASC)
- In
OSI, a utility program for OSI Communications Subsystem that processes user-specified
ASN.1 statements and generates (a) data structures in a user-selected programming
language that define the format of the data used to communicate with peer
application entities, and (b) the metatable that OSI Communications Subsystem
uses to encode and decode the data passed between application entities.
-
Abstract Syntax Notation One (ASN.1)
- In Open Systems Interconnection (OSI), a notation for defining data structures
and data types. The notation is defined in international standards ISO 8824/ITU
X.208 and ISO 8825/ITU X.209.
-
abstract test
- A component or unit
test that is used to test Java interfaces, abstract classes, and superclasses;
that cannot be run on its own; and that does not include a test suite. See
also component test.
-
Abstract User Interface Markup Language (AUIML)
- An XML implementation that provides a platform and technology-neutral
method of representing windows, wizards, property sheets, and other user interface
elements. It defines the purpose of the user interface, such that it can be
described once and rendered to the user in multiple environments and on various
devices.
-
Abstract Window Toolkit (AWT)
- In
Java programming, a collection of GUI components that were implemented using
native-platform versions of the components. These components provide that
subset of functionality which is common to all operating system environments.
(Sun) See also Swing Set, Standard Widget Toolkit.
-
abuttal operator
- In REXX, when two
terms in an expression are adjacent and are not separated by an operator,
they are said to abut. The effect of this operation is that the two terms
are concatenated without a blank.
-
ac
- See alternating
current.
-
AC adapter
- See autonomic computing adapter.
-
AC adoption model
- See autonomic computing adoption model.
-
ACB
- (1) See adapter
control block.
- (2) See application control
block.
-
ACBGEN
- See application control block generation.
-
ACC
- See application
control command.
-
accelerator
- In a user interface,
a key or combination of keys that invokes an application-defined function.
-
accept calls
- An inbound X.25 DTE
attribute that determines whether or not the local node accepts a call from
an adjacent node.
-
accept operation
- An operation that
deletes the backup software package so that the previous operation cannot
be restored.
-
accept reverse charging
- An inbound
X.25 DTE attribute that determines whether or not the local node pays for
a call from an adjacent node.
-
access
- (1) The ability to read, update,
or otherwise use a resource. Access to protected resources is usually controlled
by system software.
- (2) To obtain computing services or data.
-
access ACL
- An access control list
(ACL) that provides protection for a file system object.
-
access-any mode
- One of the two access
modes that can be set for the ESS during initial configuration. It enables
all host systems, attached to fibre channel and with no defined access profile,
to access all logical volumes (LVOLs) on the ESS. With a profile defined in
ESS Specialist for a particular host, that host has access only to volumes
that are assigned to the worldwide port name (WWPN) for that host. See also
anonymous, anonymous host, EsconNet, FiconNet, worldwide port name.
-
access authority
- One of a range of
possible authority levels that control access to protected resources.
-
access bean
- An enterprise bean wrapper
that is typically used by client programs, such as JSP files and servlets.
Access beans hide the complexity of using enterprise beans and improve the
performance of reading and writing multiple EJB properties.
-
access client
- A component that acts
as an intermediary between collaborations and an external process such as
a Web server. The access client communicates with InterChange Server through
Server Access Interface.
-
access code
- A code that allows service
providers to track the channel through which the subscriber is acquired and
to provide a specific set of deals to that customer. Access codes are paired
with registration names for the enrollment process. Access codes include tokens
that define either the number of times the access code can be used or the
period of time that the access code can be used before it expires. See also
registration name.
-
access collection
- A group of objects
that have data-level access control. Users can access objects in an access
collection if they have been given the necessary access which is based on
role definitions that are stored in the Configuration Management database.
-
access control
- In computer security,
the process of ensuring that users can access only those resources of a computer
system for which they are authorized.
-
access control environment element (ACEE)
- In RACF, a control block containing details of the current user, including
user ID, current connect group, user attributes, and group authorities. An
ACEE is constructed during user identification and verification.
-
access control information (ACI)
- Data that identifies the access rights of a group or principal.
-
access-controlled section
- A defined
area on a form that allows only certain users to edit the fields in the section.
In addition to fields, an access-controlled section can include objects, layout
regions, and text.
-
access control list (ACL)
- In computer
security, a list associated with an object that identifies all the subjects
that can access the object and their access rights.
-
access control list facility (ACL facility)
- A security feature that verifies access to objects.
-
access control list group (ACL group)
- In the Lightweight Directory Access Protocol (LDAP), a group of users
who have the same access privileges.
-
access function
- A user-provided function
that converts the data type of text stored in a column to a type that can
be processed by DB2 Net Search Extender and DB2 Text Search.
-
access group
- A type of member group
used to define access control. See also site administrator.
-
accessibility
- An attribute of a software
or hardware product that is usable by individuals who have disabilities.
-
accessible
- Pertaining to an object
for which a client has a valid designator or handle.
-
access ID
- The unique identification
of a user used during authorization to determine if access is permitted to
the resource.
-
access intent
- (1) The resource type attribute
that determines how a resource participates in a transaction when the resource
has been placed under commitment control. The possible access intents are
update, read-only, and undetermined access intent.
- (2) In RACF, a
subsystem's intended use of a protected resource.
- (3) In IMS, a subsystem's
intended use of a database. This is in contrast to the sharing level of the
database itself, which specifies how the database can be shared.
- (4) Metadata that optimizes and controls the runtime behavior of an entity bean
with respect to concurrency control, resource management, and database access
strategies.
-
access intent policy
- A grouping of
access intents that governs a type of data access pattern for enterprise bean
persistence.
-
access key
- In ESA key-controlled
storage, a key associated with a storage access request. When key-controlled
protection applies to a storage access, a store operation (write) is permitted
only when the storage key matches the access key; a fetch (read) is permitted
when the keys match or when the fetch-protection bit of the storage key is
zero. In most cases, the access key for a storage operation is the program
status word (PSW) key in the current PSW.
-
access level
- In computer security,
the level of authority a user has while accessing a secured file or library.
-
access list
- In RACF, the part of
a resource profile that specifies the users and groups that may access the
resource and the level of access granted to each.
-
access list entry token (ALET)
- A
token that serves as an index into an access list.
-
access method
- A technique for moving
data between main storage and input/output devices.
-
access method control block
- A control
block that links an application program to Virtual Storage Access Method (VSAM)
or Virtual Telecommunications Access Method (VTAM).
-
access method services (AMS)
- A multifunction
utility named IDCAMS that is used to manage catalogs, devices, and both VSAM
and non-VSAM data sets.
-
access mode
- (1) A form of access permitted
for a file.
- (2) The manner in which files are referred to by a computer.
See also dynamic access, random access, sequential access.
- (3) One of the modes in which a logical unit (LU) in a disk controller system
can operate. The three access modes are image mode, managed space mode, and
unconfigured mode. See also unconfigured mode, managed space mode, image mode.
-
access modifier
- A keyword that controls
access to a class, method, or attribute. The access modifiers in Java are
public, private, protected, and package, which is the default.
-
accessor
- In computer security, an
object that uses a resource. Users and groups are accessors.
-
accessor method
- A method that an
object provides to define the interface to its instance variables. See also
getter method, setter method, mutator method.
-
accessory
- (1) A type of merchandising
association in which a suggested product is chosen as an addition to the currently
displayed or selected product. See also cross-sell, merchandising association, up-sell.
- (2) An IBM designation for a separately orderable part
that has no type number, is for purchase only, and does not receive normal
IBM maintenance.
-
accessory script
- A CGI script that
processes SEARCH, POST, PUT, or DELETE requests. The accessory scripts process
requests that are not explicitly mapped to a CGI script named on an EXEC directive.
-
access path
- The method that is selected
by the database manager for retrieving data from a specific table. For example,
an access path can involve the use of an index, a sequential scan, or a combination
of the two.
-
access path journaling
- A method of
recording changes to an access path as changes are made to the data in the
database file so that the access path can be recovered automatically by the
system.
-
access permission
- (1) The object authority
to a high-performance file system file.
- (2) A group of designations
that determine the users who can access a particular file and how the users
can access the file.
- (3) The access privilege that applies to an object.
-
access plan
- (1) The set of access paths
that is selected by the query optimizer to evaluate a particular SQL or XQuery
statement. The access plan specifies the order of operations to resolve the
execution plan, the implementation methods (such as JOIN), and the access
path for each table that is referenced in the statement.
- (2) In DB2
for i5/OS, the control structure produced during compile time that is used
to process SQL statements encountered when the program is run.
-
access point
- (1) In the Distributed Computing
Environment (DCE), either the point at which an abstract service is obtained,
or a connection between a directory user agent (DUA) and a directory system
agent (DSA).
- (2) A cluster node that is being used as the primary
source for replicated objects and for initiating changes to the object.
-
access point group
- A collection of
core groups that defines the set of core groups in the same cell or in different
cells that communicate with each other.
-
access procedure
- The protocol used
to gain access to a shared resource; for example, in a local area network,
the shared resource is the transmission medium. The medium access protocol
specified by the IEEE 802 standard are CSMA/CD token, bus, and ring.
-
access program
- A user-provided part
of a FEPI application that handles the main communications with application
programs in CICS or IMS systems.
-
access protocol
- A protocol used between
an external subscriber and a switch within a telephone network.
-
access register (AR)
- A register through
which one address space accesses the data in another address space or data
space.
-
access register mode (AR mode)
- The
address space control mode in which the system uses general purpose registers
and the corresponding access register (AR) to resolve an address in an address
space or a data space. See also address space control
mode, primary mode.
-
access request
- A request from an
access client to InterChange Server.
-
access response
- Response returned
from a component in InterChange Server to an access request.
-
access scheduling
- The selection by
DL/I of IMS, DL/I, or SQL/DS database access tasks that are to be run. A CICS
application program designed to access DL/I databases must schedule its access
to DL/I.
-
access security information field (ASIF)
- In SNA, a field within Function Management Header Type 5 (FMH-5), which
is used to convey security information.
-
access security information subfield (ASIS)
- In SNA, a subfield within Function Management Header Type 5 (FMH-5),
which is used to convey security information.
-
access specifier
- A specifier that
defines whether a class member is accessible in an expression or declaration.
The three access specifiers are public, private, and protected.
-
access token
- An object that contains
security information for a process or thread, including the identity and privileges
of the user account that is associated with the process or thread.
-
access unit
- A unit that allows attaching
devices to access a local area network (LAN) at a central point, such as a
wiring closet or an open work area.
-
access volume
- A logical drive that
allows the host-agent to communicate with the controllers in the storage subsystem.
-
accompany data set
- In aggregate backup
and recovery support (ABARS), a data set that is physically transported from
the backup site to the recovery site instead of being copied to the aggregate
data tape. It is cataloged during recovery.
-
account
- (1) In WebSphere Commerce Payments,
a relationship between the merchant and the financial institution that processes
transactions for that merchant. There can be multiple accounts for each payment
cassette.
- (2) An entity that contains a set of parameters that define
the application-specific attributes of a user, which include the identity,
user profile, and credentials.
- (3) A logical grouping of configuration
items that is used to control access. An account can represent a company in
a data center that supports more than one company, a department, or other
groupings.
-
accountability
- (1) See nonrepudiation.
- (2) The quality of being responsible for one's
actions.
-
account document
- A document that
contains information, such as the user name and password, about an Internet
connection.
-
accounting class data
- High-level
data produced by the CICS monitoring facility which can be used for installation
accounting purposes, such as the number of transactions for a given combination
of transaction identifier, transaction type, terminal, and operator. This
data is the minimum required to enable accounting routines to associate particular
transactions with particular users or terminals.
-
accounting code
- A 15-character field,
assigned to a job by the system when it is processed by the system, that is
used to collect statistics for the system resources used for that job when
job accounting is active.
-
accounting entry
- A journal entry
that contains statistics of system resources used for job accounting.
-
accounting level
- A system value identifying
the type of data to be recorded when job accounting is active.
-
accounting segment
- The period of
time during which statistics are gathered, beginning when the job starts or
when the job's accounting code is changed, and ending when the job ends or
when the job's accounting code is next changed.
-
accounting string
- User-defined accounting
information that is sent to DRDA servers.
-
account representative
- A defined
role in WebSphere Commerce responsible for creating contracts for accounts,
and monitoring account activity. Account representatives are part of the sales
organization, and can be involved in the creation of targeted sales promotions
such as discounts and coupons.
-
accumulator
- (1) A register in which one
operand of an operation can be stored and subsequently replaced by the result
of that operation.
- (2) A printer hardware feature that supplies a
separate storage area to hold data in raster form. It can be used either for
composing a sheet of data that combines a large amount of variable and constant
data, or for storing an electronic overlay in raster form so that the overlay
is merged with variable data as the page is printed.
-
ACD
- (1) See automatic
call distribution.
- (2) See automatic call
distributor.
-
ACD group
- In telephony, the set of
multiple agents assigned to process incoming telephone calls that are directed
to the same dialed number. The routing of incoming calls to one of the agents
in the ACD group is based on such properties as availability of the agent
and length of time since the agent completed the last incoming call.
-
ACDI
- See Asynchronous
Communications Device Interface.
-
AC distributed infrastructure
- See autonomic computing distributed infrastructure.
-
ACD pilot number
- In telephony, the
common telephone number that calling parties can dial to route calls to one
of multiple agents.
-
ACDS
- See active
control data set.
-
ACEE
- See access
control environment element.
-
ACF
- (1) See attribute
configuration file.
- (2) See Advanced Communications
Function.
-
ACF/TCAM
- See Advanced Communications Function for Telecommunications Access Method.
-
ACF/VTAM
- See Advanced Communications Function for Virtual Telecommunications Access Method.
-
ACG
- See adaptive
code generation.
-
ACI
- See access
control information.
-
ACID property
- One of the properties
of a transaction: atomicity, consistency, isolation, or durability. See also
atomicity, consistency, isolation, durability.
-
ACID transaction
- A transaction involving
multiple resource managers using the two-phase commit process to ensure atomic,
consistent, isolated, and durable (ACID) properties.
-
ACIF
- See AFP
Conversion and Indexing Facility.
-
ACK
- (1) See acknowledgment.
- (2) See acknowledgment character.
-
ACK0
- See even
positive acknowledgment.
-
ACK1
- In binary synchronous communication,
the odd-numbered, positive acknowledgment, which indicates that text was received
without transmission errors.
-
acknowledged service
- In communications,
the service that provides for the establishment of a data link level connection.
Acknowledged service provides for functions such as sequencing, flow control,
and error recovery. See also unacknowledged service.
-
acknowledgment (ACK)
- The transmission
of acknowledgment characters as a positive response to a data transmission.
-
acknowledgment character (ACK)
- A
transmission control character that is sent as an affirmative response to
a data transmission.
-
ACL
- (1) See access
control list.
- (2) See application connectivity
link.
-
ACL facility
- See access control list facility.
-
ACL group
- See access control list group.
-
ACLI (administrative CLI)
- See administrative command-line interface.
-
ACL monitor
- In Domino, a document
created in the Statistics & Events database that causes the Event
task on a server to monitor a specific database for ACL changes.
-
AC maturity index
- See autonomic computing maturity index.
-
ACO
- See automated
console operation.
-
acoustic panel
- A panel bonded with
a material to reduce operating noise from the devices in the rack.
-
ACP
- See adapter
configuration profile.
-
acquire
- To assign a display station
or session to a program.
-
acquired activity
- An activity that
a program executing outside the process that contains the activity has gained
access to, by issuing an ACQUIRE command. The activity remains acquired until
the next syncpoint occurs. Acquiring an activity enables the program to read
and write to the activity's data-containers, read the process data-containers
of the process that contains the activity and issue various commands, including
RUN and LINK, against the activity. See also acquired
process.
-
acquired process
- The process whose
root activity a program currently has access to. A program acquires a process
in one of two ways: either by defining it; or, if the process already exists,
by issuing an ACQUIRE PROCESS command. The process remains acquired until
the next syncpoint occurs. Acquiring a process enables the program to read
and write to the process's data-containers, read and write to the root activity's
data-containers and issue various commands, including RUN and LINK, against
the process. A program can acquire only one process (root activity) or one
descendant activity within the same unit of work. See also acquired activity.
-
acquire-program-device operation
- An operation that makes a program device available for input or output operations.
See also release-program-device operation.
-
acquirer
- In e-commerce, the financial
institution (or an agent of the financial institution) that receives from
the merchant the financial data relating to a transaction and authorizes the
transaction.
-
ACRI
- See additional
coding-related required information.
-
ACS
- See automatic
class selection.
-
ACSE
- See association
control service element.
-
ACSE association
- In OSI, an association
that uses the services provided by association control service elements.
-
ACS installation exit
- Installation-supplied
code that is run after an automatic class selection (ACS) routine. The ACS
installation exit provides capabilities beyond the scope of the ACS routine.
-
ACS interface routine
- A procedure
that calls an automatic class selection (ACS) routine from an ACS installation-exit
routine.
-
ACS routine
- See automatic class selection routine.
-
action
- (1) A defined task that an application
performs on an object as a result of an event.
- (2) An access control
list (ACL) permission attribute.
- (3) A single step that specifies
a unit of work in a collaboration business process. See also action node, activity, code fragment, collaboration template.
- (4) The specification of an executable statement that forms an abstraction
of a computational procedure. An action typically results in a change in the
state of the system, and can be realized by sending a message to an object
or modifying a link or a value of an attribute.
- (5) In a policy-enabled
system, a type of unsolicited decision that specifies the operation or set
of operations to run when a policy is evaluated, selected, and executed. In
Policy Management for Autonomic Computing, only a single operation is supported.
- (6) An instruction in an artifact that defines a change management
operation that needs to be performed in a hosting environment.
- (7) A series of processing steps, such as document validation and transformation.
- (8) In a business rule, the event that results from the evaluation
of the condition.
- (9) An activity that is run on a transition.
-
action bar
- See menu bar.
-
action bean
- A logging bean used to
log user activity during Web site visits. Action data is used to determine
rule and campaign effectiveness.
-
action body
- The part of a rule that
contains actions to take if the rule evaluates to true.
-
Action class
- In Struts, the superclass
of all action classes.
-
action code
- A software-generated
or hardware-generated code that indicates a recovery action. In printers,
the hardware action code is byte 2 of the sense data.
-
action command
- (1) Any command used to
obtain or modify Management Information Base (MIB) variables.
- (2) A CICSPlex SM command that affects one or more of the resources represented
in a view. Action commands can be issued from either the COMM field in the
control area of the information display or the COMMAND field in a displayed
view.
-
action definition (ACTNDEF)
- In real-time
analysis, a definition of the type of external notification that is to be
issued when the conditions identified in an analysis definition are true.
-
action descriptor
- An XML file that
defines the specific actions that are needed to install or to uninstall an
installable unit into a specific hosting environment. See also artifact.
-
action group
- An explicitly defined
group of operations corresponding to Java commands that act on resources.
-
action list
- An approved list of the
actions, defined by a system administrator or some other workflow coordinator,
that a user can perform in a workflow or document routing process.
-
action mapping
- A Struts configuration
file entry that associates an action name with an Action class, a form bean,
and a local forward.
-
action message
- A request for operator
intervention from the operating system.
-
Action Message Retention Facility (AMRF)
- A z/OS facility that, when active, retains all action messages except
those specified by the installation.
-
action node
- A unit of work within
an activity diagram of a collaboration template. Every action node has an
associated Java code fragment that defines the actions in the unit of work.
Within an activity diagram in Process Designer, an action node is represented
by a rounded rectangle symbol. See also action, code fragment.
-
action object
- An object created by
applications that contain requests that set, clear, or display Management
Information Base (MIB) object attributes on a machine.
-
Action Palette
- An area containing
folders and icons that can be selected to create state table actions.
-
action sequence
- An expression that
resolves to a sequence of actions.
-
action service
- (1) In OSI, a callable
service that causes the OSI Communications Subsystem to take an action, such
as a data transfer. See also callable service, extract service, set services.
- (2) A service that triggers a process or notification to inform
users about a situation.
-
action service handler
- An entity
that is responsible for the invocation mechanism of one or more action services.
-
action servlet
- In Struts, a program
that is started by the servlet container of a Web server to process a request
that invokes an action, receives a forward from the action, and asks the servlet
container to pass the request to the forward's URL.
-
action set
- In Eclipse, a group of
commands that a perspective contributes to the main toolbar and menu bar.
-
actions profile
- In VisualAge RPG,
a collection of actions that can be associated with a specific project.
-
action state
- A state that represents
the execution of a single action, typically the invocation of an operation.
-
action subroutine
- In VisualAge RPG,
logic written by the user to respond to a specific event.
-
activate
- (1) To allocate static storage
for a program.
- (2) To make a resource ready to perform its function.
- (3) To validate the contents of a policy set and then make it the
active policy set.
- (4) To establish a new storage management policy
for the storage management subsystem (SMS) complex by loading the contents
of a source control data set (SCDS) into SMS address-space storage and into
an active control data set (ACDS), or loading the contents of an existing
ACDS into SMS address-space storage.
-
activate logical unit (ACTLU)
- In
SNA, a command used to start a session on a logical unit.
-
activate physical unit (ACTPU)
- In
SNA, a command used to start a session on a physical unit.
-
activation
- (1) A processing step that
prepares a program to be run. Activation can include allocating and initializing
static storage for programs in a job and completing some portions of binding.
- (2) In Java, the process of transferring an enterprise bean from
secondary storage to memory. (Sun) See also passivation.
- (3) The attachment of an activity to perform one of a series
of processing steps. In order to perform all its processing, an activity may
need to be activated several times. In between, it "sleeps". See also pseudoconversational.
-
activation condition
- A Boolean expression
in a node within a business process that specifies when processing is to begin.
-
activation group
- A substructure of
a job in which Integrated Language Environment (ILE) programs and service
programs are activated. This substructure contains the resources necessary
to run the program. These resources include: static and global program variables,
dynamic storage, temporary data management resources, certain types of exception
handlers and ending procedures.
-
activation group number
- A 4-byte
number that uniquely identifies an activation group within the job.
-
active
- (1) Pertaining to a resource that
is currently operational.
- (2) Pertaining to a file, page, or program
that is in main storage or memory, as opposed to a file, page, or program
that must be retrieved from auxiliary storage.
- (3) Pertaining to a
node or device that is connected or is available for connection to another
node or device.
- (4) In cross-site mirroring, pertaining to the configuration
state of a mirror copy that indicates geographic mirroring is being performed.
-
active agent
- An agent that is processing
a request for an application. See also idle agent, inactive agent.
-
active-alternate pair
- An SAA run-time
library that establishes a common execution environment for a number of SAA
programming languages.
-
active attack
- In computer security,
an assault on a network that involves an intruder who tries to break into
or take over a computer that belongs to someone else. Spoofing is an example
of an active attack.
-
active class
- (1) A class representing
a thread of control in the system.
- (2) A class whose instances are
active objects. See also active object.
-
active configuration
- The storage
management subsystem (SMS) configuration currently used to control the managed
storage in the installation. The definition of this configuration is in the
active control data set (ACDS). See also SMS configuration.
-
active context handle
- In DCE Remote
Procedure Call (RPC) applications, a context handle that the RPC has set to
a non-null value and has passed back to the calling program. The calling program
supplies the active context handle in any future calls to procedures that
share the same client context.
-
active control data set (ACDS)
- A
Virtual Storage Access Method (VSAM) linear data set that contains a source
control data set (SCDS) that has been activated to control the storage management
policy for the installation. The ACDS is shared by each system that is using
the same SMS configuration to manage storage. See also communications data set, control data set, source control data set.
-
active data
- (1) Data that can be accessed
without any special action by the user, such as data on primary storage or
migrated data. Active data also can be stored on tape volumes. See also inactive data.
- (2) For tape mount management,
application data that is frequently referenced, small in size, and managed
better on a direct access storage device (DASD) than on tape.
-
active environment group
- A collection
of mapping structured fields, positioning controls, and data descriptors that
define the environment for a page. These structured fields form an internal
object in a composed text page, page definition, or overlay.
-
active file
- A file on a tape or diskette
volume with an expiration date later than the system date.
-
active gateway
- A gateway that is
treated like a network interface in that it is expected to exchange routing
information. If it does not do so for a period of time, the route associated
with the gateway is deleted.
-
active group job
- A group job that
was not suspended by the Transfer to Group Job (TFRGRPJOB) command.
-
active IMS
- (1) In an RSR environment,
an IMS that runs at an active site, performs production work, and is monitored
by the tracking IMS. See also tracker.
- (2) In an XRF environment, an IMS that performs production work and is monitored
by the alternate IMS. See also alternate IMS.
- (3) If FDBR is used, the IMS that performs production work. The active IMS
is monitored by a separate Fast Database Recovery IMS control region.
-
active IRLM
- The internal resource
lock manager (IRLM) that supports the active IMS subsystem in an XRF complex.
See also alternate IRLM.
-
active library
- The library from which
IMS draws its execution information when online change is used.
-
active link
- A link that is currently
available for transmission of data.
-
active log
- (1) The primary and secondary
log files that are currently needed for recovery and rollback. See also archive log.
- (2) The portion of the DB2 for
z/OS log to which log records are written as they are generated. The active
log always contains the most recent log records.
- (3) A data set with
a fixed size on which WebSphere MQ records recovery events as they occur.
When the active log is full, WebSphere MQ copies its contents to a data set
called the archive log. See also archive log, recovery log.
-
active meeting
- A Sametime meeting
that is in progress and available for participation. See also meeting status.
-
active member state
- A state of a
member of a data sharing group. An active member is identified with a group
by the cross-system coupling facility (XCF), which associates the member with
a particular task, address space, and MVS system. A member that is not active
has either a failed member state or a quiesced member state.
-
active monitor
- In a token-ring network,
a function performed at any one time by one ring station that initiates the
transmission of tokens and provides token error recovery facilities. Any
active adapter on the ring has the ability to provide the active monitor
function if the current active monitor fails.
-
active name
- A Sametime awareness
component that appears as an HTML real-time link to registered Sametime participants.
An active name provides visual indication of a person's online status. See
also awareness component, presence list.
-
active object
- (1) An object that owns
a thread and can initiate control activity.
- (2) An instance of active
class. See also active class.
-
active open
- In TCP/IP, the state
of a connection that is actively providing a service. See also passive open.
-
active partition
- In BMS, the partition
that contains the cursor. It can be scrolled vertically. While a partition
is active, the cursor wraps round at the viewport boundaries, and any input
key transmits data from that partition only.
-
active policy set
- The activated policy
set that contains the policy rules currently in use by all client nodes assigned
to the policy domain.
-
active program
- Any program that is
loaded and ready to be executed.
-
active record
- An active subfile record
or any record format that is currently shown on a display. See also inactive record.
-
active routine
- The currently executing
program or sequence of instructions called by a program.
-
Active Server Page (ASP)
- An HTML
page that includes embedded programming code written in scripting languages
like VBScript or Jscript that is processed on a Web server before the page
is sent to the user. ASP is a Microsoft technology.
-
active session
- (1) A session that connects
the active CICS to an end user.
- (2) In XRF, a session between a class
1 terminal and the active system.
-
active site
- In a Remote Site Recovery
(RSR) environment, the data-processing center containing active IMSs.
-
active sort table
- A system-supplied
sort table that contains the collating sequences for all defined double-byte
characters in a double-byte character set. These tables are maintained by
the character generator utility function of the Application Development ToolSet
feature.
-
active subfile
- A subfile in which
a write operation is issued to the subfile record format or to the subfile
control record format when the DDS Subfile Initialize (SFLINZ) keyword for
display files is in effect.
-
active subfile record
- A record that
is added to the subfile by a write operation, or a record that was initialized
by the DDS keyword SFLINZ. See also inactive subfile
record.
-
active subsystem
- See active IMS.
-
active system
- In an XRF environment,
the CICS system that currently supports the processing requests of the user.
-
active task
- (1) A CICS task that is eligible
for dispatching by CICS.
- (2) During emergency restart, a task that
completed an LUW and started another, but that did not cause any records to
be written to the system log during the second LUW.
-
active version
- The most recent backup
version of a file. The active version of a file cannot be deleted until a
backup process detects that the user has either replaced the file with a newer
version or has deleted the file from the workstation. See also inactive version, backup version.
-
active window
- The window with which
a user is currently interacting. This is the window that receives keyboard
input. It is distinguishable by the unique color of its title bar and border.
-
activity
- (1) In OSI, a logical unit of
work into which peer application entities can separate the data that they
exchange.
- (2) In System Manager, a change management operation initiated
by the central site, for example, sending an object, deleting a file, and
installing a PTF. An activity is a single stop within a change request.
- (3) An operation in an activity plan that is performed on a set of targets
on a specific schedule and that can depend upon the execution of other activities.
- (4) A unit of work or a building block that performs a specific,
discrete programmatic task.
- (5) In BTS, one part of a process managed
by CICS business transaction services. Typically, an activity is part of a
business transaction. A program that implements an activity differs from a
traditional CICS application program only in its being designed to respond
to BTS events.
- (6) An item within a course outline that contains some
tasks for the student to complete, such as taking a test or attending a live
session in the LearningSpace -- Virtual Classroom.
- (7) A set of steps
that perform a portion of a scenario. See also action, activity diagram, scenario.
- (8) An object that tracks the work required to complete a development
task. An activity includes a text headline, which describes the task, and
a change set, which identifies all versions that developers create or modify
while working on the activity.
- (9) A unit of work that an individual
or group performs.
- (10) An element of a process, such as a task, a
subprocess, a loop, or a decision. Activities are represented as nodes in
process diagrams.
- (11) The largest unit into which a process is divided.
- (12) An entity that consumes database resources during its lifetime,
which can span one or more requests. A cursor and a procedure are examples
of activities.
-
activity based costing (ABC)
- A method
to measure the cost and performance of activities, resources, and cost objects.
-
activity based management (ABM)
- A method for managing activities to increase both their value to customers
and company profit.
-
activity completion event
- An atomic
event that fires when an activity completes.
-
activity condition
- In System Manager,
the criteria that must be met before the activity can start running.
-
Activity Decision Flow (ADF)
- The
format in which models are exported from WebSphere Business Integration Workbench
into WebSphere Business Modeler.
-
activity diagram
- (1) A graphical implementation
of an activity, including actions, execution flow, and external calls. An
activity diagram contains symbols that specify the steps, the order of the
steps, and the logic that determines how they execute. See also activity.
- (2) A diagram that represents the performance of a task
or duty in a workflow, or the execution of a statement in a procedure.
- (3) See activity graph.
- (4) A UML behavioral
diagram that models the dynamic parts of a system by showing the steps or
tasks that constitute a process.
-
activity graph
- A state machine that
models processes that involve one or more classifiers.
-
activity identifier
- A means of uniquely
referring to an instance of a BTS activity. Activity identifiers are assigned
by CICS.
-
activity keypoint
- A record of task
and DCT entry status on the system log made on a periodic basis to facilitate
the identification of transaction backout information during emergency restart.
In the event of an uncontrolled shutdown and subsequent emergency restart,
activity keypoints can shorten the process of backward scanning through the
system log. Activity keypoints are written automatically by the system (system
activity keypoints) or by the user (user activity keypoint). See also system activity keypoint, user
activity keypoint.
-
activity level
- A characteristic of
a subsystem that specifies the maximum number of jobs that can compete at
the same time for the processing unit.
-
activity log
- An audit trail of every
function that has altered the data in the active ledger.
-
Activity Monitor
- A DB2 administration
tool that provides a set of predefined reports to assist a database administrator
in monitoring application performance and concurrency, resource consumption,
and SQL or XQuery statement usage of a database or database partition. The
tool also provides recommendations to help a database administrator to diagnose
the cause of database performance problems and to tune queries for optimal
use of database resources.
-
activity plan
- A set of activities
performed on a set of targets on a specified schedule.
-
activity report
- A report that shows
details on software patch and software product deployment and installation
activities performed on various data center systems.
-
activity template
- A structured collection
of tasks that can be reused in specific process workflows. Activity templates
can be edited, created, cloned, and removed. Users typically apply and modify
activity templates when the create a process template.
-
activity threshold
- A threshold that
applies to an individual activity. If an activity exceeds the upper boundary
of the threshold tracking that activity, the corresponding action is executed
and applied once to that activity. See also aggregate
threshold.
-
activity trail
- A record of operations
that is used to identify which activities were done, the order in which they
were done, and who performed them.
-
activity tree
- A hierarchy of activities.
An activity tree may be several levels deep.
-
ACTLU
- See activate logical unit.
-
ACTNDEF
- See action definition.
-
actor
- In UML, a person or device
that interacts with a system.
-
actor generalization
- A generalization
that indicates that the descendant inherits the role the ancestor can play
in a use case.
-
ACTPU
- See activate physical unit.
-
actual argument
- In Fortran, the data
passed to a called routine at the point of call. See also dummy argument.
-
actual decimal point
- In COBOL, the
physical representation of the decimal point position in data using either
of the decimal point characters (. or ,). The actual decimal point appears
in printed reports and requires a position in storage. See also assumed decimal point.
-
actual parameter
-
actual UCB
- The unit control block
(UCB) used for all I/O operations as viewed with a virtual address that is
the same in every address space. The actual UCB can reside in common storage
either above or below 16 MB. See also captured UCB, unit control block.
-
actuator
- (1) The device within an auxiliary
storage device that moves the read/write heads.
- (2) A device that
causes mechanical motion.
-
ACU
- (1) See automatic
calling unit.
- (2) See abstract code unit.
-
adapter
- (1) A mechanism for connecting
two unlike parts or machines, or for electrically or physically connecting
a device to a computer or to another device.
- (2) A set of software
modules that communicate with an integration broker and with applications
or technologies to perform tasks such as executing application logic and exchanging
data.
- (3) A transparent, intermediary software component that allows
two other software components to communicate with one another.
-
adapter card
- The electrical circuits
on a logic card that connect one device to another or to a computer.
-
adapter configuration profile (ACP)
- The profile that contains information for one or more event adapters.
-
adapter control block (ACB)
- In NCP,
a control block that contains line control information and the states of I/O
operations for BSC lines, SS lines, or SDLC links.
-
adapter handler
- In System i Access,
a program that controls the operation of a communications adapter. For example,
the twinaxial adapter handler controls the operation of a twinaxial adapter
that is used to connect a personal computer to a System i platform for System
i Access functions.
-
adapter load balancing
- The ability
of several adapters in a team to be active simultaneously, with the outbound-traffic
load balanced across all the adapters in the team; spreading tasks among adapters
improves performance by preventing uneven distribution of workload. If one
adapter in the team fails, the outbound traffic is redistributed across the
remaining active adapters in the team. See also teaming.
-
adapter support software
- The software
used to operate adapters in a PC system and provide a common interface to
application programs.
-
adaptive code generation (ACG)
- A
technology that enables a program that uses processor features of a given
system model to continue to work correctly when the program is moved to another
system model that does not have all the processor features of the original
model.
-
adaptive pacing
- See adaptive session-level pacing.
-
adaptive session-level pacing
- A form
of session-level pacing in which session components exchange pacing windows
that may vary in size during the course of a session. This allows transmission
within a network to adapt dynamically to variations in availability and demand
of buffers on a session-by-session basis. Session-level pacing occurs within
independent stages along the session path according to local congestion at
the intermediate and endpoint nodes. See also fixed
session-level pacing.
-
adaptive session pacing
- See adaptive session-level pacing.
-
ADATA
- See associated data.
-
ADC
- See automatic
dictionary creation.
-
adcon
- See address constant.
-
ad copy
- The information, images and
other media used to support a marketing activity. Also referred to as sales
collateral.
-
add authority
- A data authority that
allows the user to add entries to an object; for example, to add job entries
to a job queue or to add records to a file. See also delete authority.
-
add-in
- A third-party application
that adds new function to the System i Access for Windows licensed program.
-
additional coding-related required information
(ACRI)
- A specification that is required by an encoding scheme
to complete its definition, which extends beyond the character set and code
page elements.
-
additional heap
- A heap created and
controlled by a call to call to the CEECRHP callable service.
-
address
- (1) A unique code or identifier
for a register, device, workstation, system, or storage location.
- (2) The second part of a two-part user identification used to send distributions.
-
address book
- A collection of shipping
and billing addresses owned by a customer. These are useful for a customer
who wants to purchase gifts and ship them to different addresses.
-
address class
- In Internet communications,
the categorization by the part of an IP address that distinguishes the network
address from the host address. Class A addresses allocate 7 bits to the network
ID and 24 bits to the host ID. Class B addresses allocate 14 bits to the network
ID and 16 bits to the host ID. Class C addresses allocate 21 bits to the network
ID and 8 bits to the host ID. Class D addresses contain 1110 in the first
4 bits and identify the address as a multicast. The remaining 28 bits in the
class D address specify a particular multicast group.
-
address constant (adcon)
- A field
containing an address, a length, or an offset.
-
addressed direct access
- In the Virtual
Storage Access Method (VSAM), the retrieval or storage of a data record identified
by its relative byte address.
-
addressed sequential access
- In the
Virtual Storage Access Method (VSAM), the retrieval or storage of a data record
in its entry sequence relative to the previously retrieved or stored record.
-
address expansion
- The process by
which the full name of a financial institution is obtained using the SWIFT
address, telex correspondent's address, or a nickname.
-
address identifier
- In fibre-channel
technology, an address value used to identify the source (S_ID) or destination
(D_ID) of a frame.
-
addressing
- (1) In data communications,
the way that the sending or control station selects the station to which it
is sending data.
- (2) A method of identifying storage locations.
- (3) The assignment of addresses to the instructions of a program.
-
addressing mode (AMODE)
- The attribute
of a program module that identifies the addressing range in which the program
entry point can receive control.
-
address mapping table (AMT)
- A table
that provides a current mapping of node addresses to hardware addresses.
-
address poisoning
- A hacking technique
that redirects data to a different system (for snooping packets) or to nonexistent
addresses.
-
address pool
- In data communications,
a collection of multipoint addresses. Each address can be associated with
an individual communications session.
-
address resolution
- A method for mapping
network-layer addresses to media-specific addresses.
-
Address Resolution Protocol (ARP)
- A protocol that dynamically maps an IP address to a network adapter address
in a local area network.
-
address space
- (1) The range of addresses
available to a computer program or process. Address space can refer to physical
storage, virtual storage, or both. See also allied
address space, buffer pool, virtual address space.
- (2) A range of up to two gigabytes of contiguous
virtual storage addresses that the system creates for the user. See also data space.
-
address space connection
- A connection
that is a result of an allied address space connecting to DB2. See also task control block.
-
address space control mode
- The mode,
determined by the program status word, that indicates where to find referenced
data. Three types of address space control modes are primary, secondary, and
access register. VTAM macroinstructions must be invoked in primary address
space control mode. See also access register mode.
-
address space identifier (ASID)
- A unique, system-assigned identifier for an address space.
-
address switch
- A switch on a device
that the user sets to represent the address of that device.
-
address type
- In data communications,
a value used to define the format and contents of an address field. Address
types are associated with the originator address, the recipient address, and
the reply-to address information. The address types supported by a system
are defined when the mail server framework is configured. The value associated
with an address type must be unique.
-
ADF
- See Activity
Decision Flow.
-
ad hoc inventory receipt
- A record
of physical inventory that arrived at a specific fulfillment center at a specific
time, and was not expected inventory. See also inventory
receipt.
-
ADI
- See alternate
delay interval.
-
adjacent CMAS
- A CICSPlex SM address
space (CMAS) that is connected to local CMAS via a direct CMAS-to-CMAS link.
-
adjacent control point
- A control
point (CP) that is directly connected to an APPN, LEN, or composite node by
a link.
-
adjacent destination node
- In OSI,
a destination node that is also an adjacent node--that is, attached to the
same subnetwork as the local node. See also intermediate
system, nonadjacent destination node.
-
adjacent link station (ALS)
- In SNA,
a link station directly connected to a given node by a link connection over
which network traffic can be carried. Several secondary link stations that
share a link connection do not exchange data with each other and therefore
are not adjacent to each other.
-
adjacent node
- In OSI, a node that
is attached to the same subnetwork as the local node. An adjacent node can
be either a destination node or a relay node.
-
adjacent nodes
- Two nodes connected
by at least one path that connects no other nodes.
-
adjacent SSCP table
- A table that
contains lists of the system services control points (SSCPs) that VTAM can
be in session with or can use to reach destination SSCPs in the same network
or in other networks. The table is filed in the VTAM definition library.
-
adjudication
- The process of deciding
to exclude a violation from, or reinstate a violation to, the service level
objective for an associated service level agreement (SLA).
-
adjust
- To move text so that it fits
between the defined left and right margins or between the first and last typing
lines.
-
ADL
- See Advanced
Distributed Learning.
-
ADMD
- See administration
management domain.
-
admin
- See administrator.
-
admin domain
- See administrative domain.
-
administration bag
- In the WebSphere
MQ Administration Interface (MQAI), a type of data bag that is created for
administering WebSphere MQ by implying that it can change the order of data
items, create lists, and check selectors within a message.
-
administration domain
- In the Distributed
Computing Environment (DCE), a domain defined by the boundaries of a cell.
-
administration management domain (ADMD)
- In OSI X.400, a public organization that handles a management domain.
-
administration notification log
- A list of messages that helps an administrator to resolve minor issues. See
also contact.
-
administration notification message
- An alarm, error message, warning, attention message, or informational message
that is written by the database manager, replication programs, user applications,
or the health monitor to a notification file or event log. See also contact.
-
administration process
- A Domino server
task (Adminp) that automates many administrative tasks. An administrator initiates
the tasks, and the administration process completes them. Some of the tasks
that the administration process can automate are: recertifying Notes IDs,
renaming and deleting references to Notes users and groups, creating replicas
of databases, and moving databases.
-
administration queue
- In Q replication
and event publishing, a WebSphere MQ queue that is used by the Q Apply program
and user applications to communicate with the Q Capture program. The administration
queue for each Q Capture program must be a local, persistent queue.
-
administration server
- The Domino
server assigned to apply Administration Process updates to a primary replica.
-
administrative agent
- A program that
provides administrative support without requiring a direct connection to a
database.
-
administrative CLI (ACLI)
- See administrative command-line interface.
-
administrative command-line interface (ACLI,
administrative CLI)
- A command-line interface used to administer
all aspects of the SAN File System. The ACLI runs on all engines that host
metadata servers and the administrative server.
-
administrative domain (admin domain)
- (1) A collection of hosts and routers, and the interconnecting networks, that
are managed by a single administrative authority.
- (2) A logical collection
of resources that is used to separate responsibilities and manage permissions.
-
Administrative Facility
- In OSI, an
interactive, menu-driven utility provided by OSI Communications Subsystem
with which users define and maintain their network layout, installed protocols,
available application entities, and other information used by OSI Communications
Subsystem.
-
administrative log
- A log that maintains
a history of routine activities and error conditions that are generated by
the administrative servers.
-
administrative repository
- A database
that contains configuration, problem, change, and inventory information needed
to administer the information system. The repository can be used to perform
the functions of configuration management, problem management, and change
management.
-
administrative right
- A level of authority
possessed by a process.
-
administrative role
- A classification
of a user that prescribes access to a user.
-
administrative server
- A set of servlets
running within a customized instance of WebSphere Application Server that
handles all administrative requests from the SAN File System console or from
the administrative command line interface (ACLI). The administrative server
also enforces administrative permissions, which restrict the use of tasks
that are permitted for a specified administrator. See also SAN File System console.
-
administrative VOB
- A versioned object
base (VOB) that contains global type objects. Local copies of global type
objects can be created in any VOB that has an AdminVOB hyperlink to the administrative
VOB that defines the global type object.
-
administrator (admin)
- A person responsible
for administrative tasks such as access authorization and content management.
Administrators can also grant levels of authority to users.
-
administrator collection
- In a Tivoli
environment, a resource that contains all Administrator objects. The Administrator
icon on the Tivoli desktop represents an administrator collection.
-
administrator command
- A command used
to manage WebSphere MQ objects, such as queues, processes, and namelists.
-
administrator profile
- Data that describes
a DirectTalk user. Information in an administrator profile includes ID, password,
language preference, and access privileges.
-
admin role
- See authorization role.
-
admission control
- (1) A policy decision
that is applied initially to QoS reservation requests for controlling the
admission of network traffic into the network. Admission control is the process
of ensuring that the load on the network links is manageable.
- (2) The process used by the server to ensure that its bandwidth needs are not
compromised by new asset requests.
-
adopted authority
- Authority given
to the user by the object while the object is running. The object must be
created with owner authority. These object types can have adopted authority:
program, service program, and SQL package.
-
ADS
- (1) See area
data set.
- (2) See architecture description
specification.
-
ADSI
- See Analog
Display Services Interface.
-
ADSI telephone
- A 'smart' telephone
capable of interpreting and returning ADSI data.
-
ADSL
- See Asymmetric
Digital Subscriber Line.
-
ADSP
- See automatic
data set protection.
-
ADS view
- A projection into models
and specifications that are architecturally significant.
-
ADS viewpoint
- In the Reusable Asset
Specification (RAS), a collection of views with strong affinity for representing
architecturally significant artifacts.
-
ADT
- See application
deployment template.
-
advanced assistance level
- The type
of displays that provide the same functions as the intermediate assistance
level. However, the displays contain as much information as possible by not
displaying the allowed function keys and options.
-
advanced attribute
- The combination
of a capability and capability value.
-
Advanced Business Application Programming/4 (ABAP/4)
- A fourth-generation programming language in which SAP R/3 application
software is written.
-
Advanced Communications Function (ACF)
- A group of IBM licensed programs that use the concepts of Systems Network
Architecture (SNA), including distribution of function and resource sharing.
-
Advanced Communications Function for Telecommunications
Access Method (ACF/TCAM)
- See Telecommunications
Access Method.
-
Advanced Communications Function for Virtual
Telecommunications Access Method (ACF/VTAM)
- An IBM licensed program
that controls communication and the flow of data in an SNA network. It provides
single-domain, multiple-domain, and interconnected network capability.
-
Advanced DBCS Printer Support
- The
IBM licensed program that provides support for printers capable of printing
double-byte character sets (DBCS).
-
Advanced Distributed Learning (ADL)
- A set of standards designed to facilitate the sharing of learning objects
across different learning management systems.
-
Advanced Encryption Standard (AES)
- A data encryption technique that improved upon and officially replaced the
Data Encryption Standard (DES). AES is sometimes referred to as Rijndael,
which is the algorithm on which the standard is based.
-
advanced function common control unit (AFCCU,
afccunit)
- A controller that converts Intelligent Printer Data
Stream (IPDS) into a presentation format that is usable by the COM and that
transfers the setup data, document pages, and text-related information to
COM.
-
Advanced Function Presentation (AFP)
- A set of licensed programs, together with user applications, that use the
all-points-addressable concept to print data on a wide variety of printers
or to display data on a variety of display devices. AFP includes creating,
formatting, archiving, retrieving, viewing, distributing, and printing information.
-
Advanced Function Presentation data stream (AFPDS)
- A presentation data stream that is processed in AFP environments.
MO:DCA-P is the AFP interchange data stream. IPDS is the AFP printer data
stream.
-
advanced intelligent network (AIN)
- A telephone network that expands the idea of the intelligent network to provide
special services more efficiently: for example, by giving users the ability
to program many of the services themselves.
-
Advanced Mobile Phone Service (AMPS)
- The original analog cellular network and currently the world's largest cellular
standard.
-
Advanced Peer-to-Peer Networking (APPN)
- An extension to SNA that features distributed network control, dynamic
definition of network resources, automated resource registration, and automated
directory lookup. This network architecture supports the routing of data in
a network between two or more Advanced Peer-to-Peer Communication (APPC) systems
that do not need to be directly connected. See also network node.
-
advanced printer function (APF)
- A function of the Application Development ToolSet feature that allows a user
to design symbols, logos, special characters, large characters, and forms
tailored to a business or data processing application.
-
Advanced Program-to-Program Communication (APPC)
- An implementation of the SNA LU 6.2 protocol that allows interconnected
systems to communicate and share the processing of programs. See also APPC/MVS.
-
Advanced Program-to-Program Communication/IMS
(APPC/IMS)
- A part of IMS TM that uses the common programming interface,
which allows IMS application programs to communicate with other programs by
using LU 6.2.
-
Advanced Radio Data Information Service (ARDIS)
- A packet-switched network that provides a data rate of 19.2 Kbps
and is known for its deep penetration into buildings. ARDIS is primarily used
for field service and transportation applications.
-
Advanced Research Projects Agency (ARPA)
- See Defense Advanced Research Projects Agency.
-
Advanced System Management interconnect (ASM
interconnect)
- A feature of IBM service processors that enables
users to connect up to 24 servers to one service processor, thus eliminating
the need for multiple modems, telephones, and LAN ports. It provides such
out-of-band management functions as system power control, service-processor
event-log management, firmware updates, alert notification, and user profile
configuration.
-
Advanced System Management interconnect network
(ASM interconnect network)
- A network of IBM servers created by
using the ASM interconnect feature. The servers are connected through RS-485
ports. When servers containing integrated system management processors (ISMPs)
and ASM processors are connected to an ASM interconnect network, IBM Director
can manage them out-of-band.
-
Advanced System Management PCI adapter (ASM PCI
adapter)
- An IBM service processor that is built into the Netfinity
7000 M10 and 8500R servers. It also was available as an option that could
be installed in a server that contained an ASM processor. When an ASM PCI
adapter is used with an ASM processor, the ASM PCI adapter acts as an Ethernet
gateway, while the ASM processor retains control of the server. When used
as a gateway service processor, the ASM PCI adapter can communicate with other
ASM PCI adapters and ASM processors only.
-
Advanced System Management processor (ASM processor)
- A service processor built into the mid-range Netfinity and early
xSeries servers. IBM Director can connect out-of-band to an ASM processor
located on an ASM interconnect; an ASM PCI adapter, a Remote Supervisor Adapter,
or a Remote Supervisor II must serve as the gateway service processor.
-
advice
- An incoming message that advises
of a payment to come. For credits, this is also called a notice to receive.
-
advisor
- (1) An application that provides
a recommendation or suggestion that is based on input from the user. Advisors
do not perform functions or change system values.
- (2) In Performance
Tools, a tool used to analyze data collected by the performance monitor function
of the operating system. The advisor analyzes a collection of performance
data and produces a list of conclusions and recommendations to improve system
performance.
-
advisory lock
- A type of lock that
a process holds on a region of a file preventing any other process from locking
the region or an overlapping region. See also enforced
lock.
-
AE
- See application
entity.
-
AES
- See Advanced
Encryption Standard.
-
AE title
- See application entity title.
-
AFCB
- See authorized
function control block.
-
AFCCU (afccunit)
- See advanced function common control unit.
-
afccunit (AFCCU)
- See advanced function common control unit.
-
affinity
- An association between objects
that have some relationship or dependency upon each other.
-
affix
- A morpheme that cannot occur
by itself and that is joined before, after, or within a root or stem. For
example, the prefix 're-' in reengineering, and 'opto-' in optoelectronics.
-
AFP
- See Advanced
Function Presentation.
-
AFP Conversion and Indexing Facility (ACIF)
- An Advanced Function Presentation (AFP) program that converts a print
file into a Mixed Object Document Content Architecture-Presentation (MO:DCA-P)
document, creates an index file for later retrieval and viewing, and retrieves
resources used by an AFP document into a separate file.
-
AFPDS
- See Advanced Function Presentation data stream.
-
AFP printer driver
- A printer driver
that runs on a Windows workstation and creates output in Advanced Function
Presentation (AFP) format for printing on AFP printers.
-
AFP resource
- One of the resources
that are used to produce printed output, including form definitions, page
definitions, fonts, overlays (electronic forms), and page segments (graphic
images).
-
AFP statistics report (AFPSTATS)
- A report that contains summary data about the resources used to print a document.
The AFPSTATS report is used to indicate in which libraries PSF found a resource,
diagnose some resource selection problems, obtain statistical data about how
a print file is printed, and diagnose some print file printing performance
problems.
-
AFPSTATS
- See AFP statistics report.
-
AFP Toolbox
- An IBM product that assists
application programmers in formatting printed output. Without requiring knowledge
of the AFP data stream, AFP Toolbox provides access to sophisticated AFP functions
through a callable C, C++, or COBOL interface. AFP Toolbox is available on
OS/390, z/OS, AIX, and OS/400 platforms.
-
AFP Upload
- An optional feature of
PSF for z/OS that lets you submit a job to Infoprint for AIX for printing
on any printer supported by PSF for z/OS .
-
AFP Viewer plug-in
- A program that
runs on a Windows workstation and is used for viewing files in Advanced Function
Presentation (AFP) format from a Web browser.
-
AFP Workbench Viewer
- An IBM-licensed
product that lets you display AFP and ASCII files at your Windows workstation
in the same format they are printed.
-
AFS
- A distributed file system for
large networks that is known for its ease of administration and expandability.
-
after-image
- (1) In SQL replication, the
updated content of a source-table column that is recorded in a change data
(CD) table or in a database log or journal. See also before-image.
- (2) The contents of a record in a physical file
after the data is changed by a write or an update operation.
- (3) A record of the contents of a data element after it has been changed. After-images
are used for forward recovery.
- (4) A business object that contains
all of an entity's data after changes have been made to it during an update
operation. An after-image contains the complete business object rather than
only the primary key and those elements that were changed. See also delta business object.
-
after-job subroutine
- A routine that
runs after a job completes.
-
after-stage subroutine
- A routine
that runs after a stage processes data.
-
after trigger
- A trigger that is specified
to be activated after a defined trigger event (an insert, an update, or a
delete operation on the table that is specified in a trigger definition).
See also before trigger, trigger, trigger activation, trigger activation time.
-
after value
- In Q replication, the
updated content of a source-table column.
-
agent
- (1) In a z/OS environment, the
structure that associates all processes that are involved in a unit of work.
- (2) In telephony, a customer service person whose job is to handle
incoming or outgoing telephone calls.
- (3) A function that represents
a requester to a server.
- (4) In the two-phase commit protocol, a node
at the bottom of the transaction program network hierarchy.
- (5) An
entity that represents one or more objects by (a) sending notifications regarding
events and (b) handling requests from managers to modify or query the objects.
- (6) A program that performs a specific service, such as data collection,
without user intervention or on a regular schedule. See also common agent, subagent.
- (7) A separate
process or thread that carries out all DB2 requests that are made by a particular
client application. See also engine dispatchable unit.
- (8) In a two-phase commit syncpointing sequence (LU6.2 or multiregion
operation (MRO)), a task that receives syncpoint requests from an initiator.
- (9) A program that performs a series of automated tasks according
to a set schedule or at the request of a user. An agent consists of three
components: the trigger (when it acts), the search (what documents it acts
on), and the action (what it does).
- (10) A server program that receives
virtual connections from the network manager (the client program) in an SNMP-TCP/IP
network-managing environment. An agent is the interface to a managed device.
- (11) The function that manages the parsing and routing of distributed
data management (DDM) commands and replies.
- (12) In Q replication,
one of the threads of the Q Apply program that is started by a browser. It
receives transactions from the browser and applies this data to target tables.
One or more agents can exist for each browser.
-
Agent Building and Learning Environment (ABLE)
- A Java framework and toolkit for constructing and deploying intelligent
agents.
-
agent code
- An open-systems standard
that interprets Common Information Model (CIM) requests and responses as they
are transferred between the client application and the device.
-
Agent Controller
- A daemon process
that resides on each deployment host and provides the mechanism by which client
applications either launch new host processes or attach to agents that coexist
within existing processes on the host.
-
agent group
- A group of management
agents that run the same policy or policies. Each management agent is associated
with one or more listening and playback components.
-
agent ID
- A ID that identifies a specific
instance of the common agent software that is installed on a managed system.
The ID is the directory in which the common agent software is installed. A
managed system, which is identified by a Tivoli GUID, can have multiple common
agents installed on it.
-
agent manager
- (1) The background server
program that manages and runs agents on a server.
- (2) A network service
that provides authentication and authorization and that maintains a registry
of configuration information about the common agents and resource managers
in a user's environment.
-
agent private memory
- Memory that
is allocated for a database agent when the agent is assigned as the result
of a connect request or a new SQL request in a parallel environment. The memory
is used only by the specific agent. See also private
sort.
-
agent recovery service
- A service
of the agent manager that provides error logging for agents that are unable
to communicate with other agent manager services.
-
agent site
- In the Data Warehouse
Center, the location, defined by a single network host name, where a warehouse
agent application is installed. See also remote agent
site, default agent site.
-
aggregate
- (1) A structured collection
of data objects that form a data type.
- (2) An array, structure, or
union.
- (3) In C++, an array or a class with no user-declared constructors,
no private or protected non-static data members, no base classes, and no virtual
functions.
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aggregate backup
- The process of copying
an aggregate group and recovery instructions so that a collection of data
sets can be recovered later as a group.
-
aggregate backup and recovery support (ABARS)
- A function that backs up a user-defined related group of data
sets, called an aggregate, and recovers those data sets on the same system
or on a recovery system.
-
aggregate bandwidth
- Total throughput,
in megabits per second, that moves through a server or server subsystem. See
also throughput.
-
aggregate class
- A class that represents
the whole in an aggregation (whole-part) relationship.
-
aggregate data sets
- In aggregate
backup and recovery support (ABARS) processing, data sets that have been defined
in an aggregate group as being related.
-
aggregated installable unit (aggregated IU)
- An installable unit (IU) that comprises other installable units. See
also change manager, installable
unit.
-
aggregated IU
- See aggregated installable unit.
-
aggregate function
- A function that
optionally accepts arguments and returns a single scalar value that is the
result of an evaluation of a set of like values, such as those in a column
within a set of one or more rows. See also function, routine.
-
aggregate group
- (1) In DFSMShsm, a collection
of related data sets and control information that has been pooled to meet
a defined backup or recovery strategy.
- (2) A collection of data objects
that form a data type, so that the data can be referred to collectively or
individually. Aggregate group is used in conjunction with the storage of direct
access storage device (DASD) data, not within an object access method (OAM)
environment.
-
aggregate
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