Characters originating from
the Chinese characters used in the Japanese written
language.
Katakana
A graphic Japanese
character set that is used to write non-Japanese words phonetically in
Japanese. Contrast with Hiragana.
kbps
Kilobits per
second.
keep-alive
Pertaining to the
amount of time that elapses before a message is sent to verify a
connection.
Kerberos
The authentication
protocol used to implement Distributed Computing Environment (DCE) private key
authorization. Kerberos was developed at the Massachusetts Institute of
Technology.
kernel
In OSI, a session-layer
functional unit that supports the basic session services required to establish
connections, transfer normal data, and release
connections. (I)
kernel thread
A one-to-one
mapping between program threads and process threads where each thread is
assigned to a machine task.
key
(1) The value used to identify a
record in a keyed sequence file.
(2) In COBOL, a data item that
identifies the location of a record, or a set of data items that is used to
place data in ascending or descending sequence.
(3) In Cryptographic Support, a 64-bit
value (containing 56 independent bits and 8 parity bits) used by the Data
Encryption Algorithm to determine the output of the algorithm.
(4) In the Distributed Computing
Environment (DCE), a value used to encrypt and decrypt
data.
(5) In DB2 UDB for AS/400, one or more
columns that are identified as such in the description of an index, or a
referential constraint. The same column can be part of more than one
key. A key composed of more than one column is called a composite
key.
(6) In computer security, an algorithmic
pattern that is used by a sender to encrypt messages and by a recipient to
decrypt messages. See also private key and public
key.
keyboard profile
In Client
Access, a file that defines the way characters and functions are mapped to
keys on the keyboard when the personal computer is emulating a host
session.
keyboard shift
In DDS, a
characteristic that can be specified for a field in a display file that
automatically shifts the display station keyboard to control what the display
station user can enter into the field. In IDDU and DDS, the keyboard
shift can also be specified in database files, but only applies when these
fields are referred to in a display file.
keyboard style
In Client Access,
the keyboard key assignments that are changed to match a particular keyboard
type or user-defined arrangement.
keyboard type
The physical key
arrangement and assignments for the keyboard shipped from the
factory.
keyed compliance
A requirement
whereby the user must have a license key (code) from the software provider to
be able to change the usage limit or the expiration date of the license
information.
keyed data queue
An AS/400 data
queue that contains individual pieces of data (messages) that are associated
with a key value. Messages can be received from a keyed data queue by
specifying the key value or a relational operator. The
system-recognized identifier for the object type is
*DTAQ.
keyed sequence
An order in which
records are retrieved that is based on the contents of key fields in
records. See also arrival
sequence.
keyed sequence access path
An
access path to a database file that is arranged according to the contents of
key fields contained in the individual records. See also arrival
sequence access path and access
path.
key-encrypting key
In
Cryptographic Support, a key used to encrypt another cryptographic key.
See also cross-domain key and host master
key.
key entry area
In AFP Utilitites,
an area shown at the lower part of the image area for entering the parameters
for an element. See also image
area.
key field
A field used to arrange
the records of a particular type within a file
member.
key field level specifications
Data
description specifications coded on the lines following the last field
specification. Key field level specifications are permitted only for
physical files or logical files. See also field level
specifications, file level specifications, record level
specifications, help level specifications, join level
specifications, and select/omit level
specifications.
key file
In the Distributed
Computing Environment (DCE), a file that contains encryption keys for
noninteractive principals.
Keylock feature
A security
feature in which a lock and key can be used to restrict the use of the display
station.
keylock switch
A switch on the
control panel that can be set to one of four different positions to establish
the power-on and power-off modes allowed for the
system.
key management facility
In the
Distributed Computing Environment (DCE), a Security Service facility that
enables noninteractive principals to manage their secret
keys.
key of reference
In COBOL, the
key, either prime or alternate, currently being used to access records within
an indexed file.
key pair
In computer security, a
public key and a private key. The sender uses the private key to
encrypt the message. The recipient uses the public key to decrypt the
message. Because the private key holds more of the encryption pattern
than the public key does, the key pair is called
asymmetric.
key policy
A single,
key-protection transform that the initiating key server offers to the
responding key server. A key policy governs Phase I
negotiations.
key ring
In computer security, a
file that contains public keys, private keys, trusted roots, and
certificates.
key schedule
In Cryptographic
Support, sixteen 8-byte keys created by the Data Encryption Algorithm from the
supplied cryptographic key that are used to encrypt or decrypt the supplied
data.
key server
A server that
negotiates the values that determine the characteristics of a dynamic Virtual
Private Network (VPN) connection that is established between two
endpoints.
key system
In telephony, the type
of telephone system that provides telephones with more than one line for
users. Outside lines appear directly on the telephones instead of being
routed through an operator and transferred, as in PBX
systems.
key table
See cross-domain
key table.
key/think time
In capacity
planning, the time between interactive transactions such as typing, thinking,
idle time, and so on. As an interactive user's proficiency with the
application improves, the user's key/think time is likely to reduce, which
can result in an increase in the observed
throughput.
key translation
In Cryptographic
Support, the conversion of a data encrypting key from encryption under a
previous key-encrypting key to encryption under another key-encrypting
key.
keyword
(1) A mnemonic (abbreviation)
that identifies a parameter in a command.
(2) In the OfficeVision program, a
user-defined word used as one of the search values to identify a document
during a search operation.
(3) In COBOL, a reserved word that
is required by the syntax of a COBOL statement or entry.
(4) In DDS, a name that identifies a
function.
(5) In REXX, a symbol reserved for
use by the language processor in a certain context. Keywords include
the names of the instructions and ELSE, END, OTHERWISE, THEN, and WHEN.
(6) In query management, one of the
predefined words associated with a query command.
(7) A name that identifies a
parameter used in an SQL statement. See also
parameter.
keyword functions
The result of
processing DDS keywords in a record format specified on an operation.
See also operation.
keyword instruction
In REXX, one
or more clauses, the first of which starts with a keyword that identifies the
instruction. Some keyword instructions affect the flow of control,
while others provide services to the programmer. CALL, DO, and PARSE
are examples of keyword
instructions.
Korean double-byte character set
An
IBM-defined double-byte character set for Korean, consisting of Korean
non-Hangeul/non-Hanja set, Hangeul set, Hanja set and up to 1,880
user-definable characters.
Korean Hangeul character set
A subset
of the Korean DBCS, consisting of 2672 Hangeul characters and 52 Jamo
characters.
Korean Hanja character set
A subset of
the Korean DBCS, consisting of 5265 Hanja
characters.
Korean non-Hangeul/non-Hanja character set
A subset
of the Korean DBCS, consisting of non-Hangeul/non-Hanja characters, such as
Greek, Russian, Roman numeric, alphanumeric and related symbols, Katakana,
Hiragana, and special symbols. There are 940 characters in this
set.