IBM DB2 Manual page 564

server The target of a request from a remote
requester. In the DB2 environment, the
server function is provided by the
distributed data facility, which is used to
access DB2 data from remote applications.
service class
An eight-character identifier that is used
by the z/OS Workload Manager to
associate user performance goals with a
particular DDF thread or stored
procedure. A service class is also used to
classify work on parallelism assistants.
service request block
A unit of work that is scheduled to
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| execute.
session
A link between two nodes in a VTAM
network.
session protocols
The available set of SNA communication
requests and responses.
| set operator
The SQL operators UNION, EXCEPT, and
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| INTERSECT corresponding to the
relational operators union, difference, and
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intersection. A set operator derives a
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| result table by combining two other result
tables.
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shared communications area (SCA)
A coupling facility list structure that a
DB2 data sharing group uses for
inter-DB2 communication.
share lock
A lock that prevents concurrently
executing application processes from
changing data, but not from reading data.
Contrast with exclusive lock.
shift-in character
A special control character (X'0F') that is
used in EBCDIC systems to denote that
the subsequent bytes represent SBCS
characters. See also shift-out character.
shift-out character
A special control character (X'0E') that is
used in EBCDIC systems to denote that
the subsequent bytes, up to the next
shift-in control character, represent DBCS
characters. See also shift-in character.
sign-on
A request that is made on behalf of an
individual CICS or IMS application
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Application Programming Guide and Reference for Java
process by an attachment facility to
enable DB2 to verify that it is authorized
to use DB2 resources.
simple page set
A nonpartitioned page set. A simple page
set initially consists of a single data set
(page set piece). If and when that data set
is extended to 2 GB, another data set is
created, and so on, up to a total of 32
data sets. DB2 considers the data sets to
be a single contiguous linear address
space containing a maximum of 64 GB.
Data is stored in the next available
location within this address space without
regard to any partitioning scheme.
simple table space
A table space that is neither partitioned
nor segmented. Creation of simple table
spaces is not supported in DB2 Version
9.1 for z/OS. Contrast with partitioned
table space, segmented table space, and
universal table space.
single-byte character set (SBCS)
A set of characters in which each
character is represented by a single byte.
Contrast with double-byte character set or
multibyte character set.
single-precision floating point number
A 32-bit approximate representation of a
real number.
SMP/E
See System Modification
Program/Extended.
SNA See Systems Network Architecture.
SNA network
The part of a network that conforms to
the formats and protocols of Systems
Network Architecture (SNA).
socket A callable TCP/IP programming interface
that TCP/IP network applications use to
communicate with remote TCP/IP
partners.
sourced function
A function that is implemented by
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| another built-in or user-defined function
that is already known to the database
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manager. This function can be a scalar
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| function or an aggregate function; it
returns a single value from a set of values
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