JDBC Type 4 Driver 2.0 Programmer's Reference (SQL/MX 2.x)

server. Often, the client is a process residing on a programmable workstation and is the part of a
program that provides the user interface. The workstation client might also perform other portions
of the program logic. Also called a requester.
CLOB
Short for Character Large OBject, text data stored as a single entity in a database management
system. A Java Clob object (Java type, java.sql.Clob) corresponds to the SQL CLOB data
type.
command
The operation demanded by an operator or program; a demand for action by, or information from,
a subsystem. A command is typically conveyed as an interprocess message from a program to a
subsystem.
concurrency
A condition in which two or more transactions act on the same record in a database at the same
time. To process a transaction, a program must assume that its input from the database is
consistent, regardless of any concurrent changes being made to the database. TMF manages
concurrent transactions through concurrency control.
concurrency control
Protection of a database record from concurrent access by more than one process. TMF imposes
this control by dynamically locking and unlocking affected records to ensure that only one
transaction at a time accesses those records.
connection pooling
A framework for pooling JDBC connections.
Core API
The minimal set of APIs that developers can assume is present on all delivered implementations of
the Java Platform when the final API is released by Sun Microsystems, Inc. The NonStop Server
for Java 4 conforms to every Core API in the JDK. Core API is also called Java Core Classes and
Java Foundation Classes.
D
Data Control Language (DCL)
The set of data control statements within the SQL/MP language.
Data Manipulation Language (DML)
The set of data-manipulation statements within the SQL language. These statements include
INSERT, DELETE, and UPDATE, which cause database modifications that Remote Duplicate
Database Facility (RDF) can replicate.
data source