TS/MP System Management Manual (H06.05+, J06.03+)

Glossary
HP NonStop TS/MP System Management Manual—541819-007
Glossary-5
current working directory
current working directory. The OSS directory from which relative pathnames are resolved.
See also OSS pathname and relative pathname.
Customer Information Control System (CICS). An IBM transaction management system
that provides concurrent online access to data files by means of user-written
application programs. CICS also includes facilities for building, using, and maintaining
databases.
database consistency. The state of a database in which items satisfy established criteria.
For example, an account balance must equal credits to the balance minus debits to the
balance. When the database satisfies these criteria, the database is considered to be
consistent. In general, a database is consistent when it is accurate and all changes
generated by transactions are complete. Database consistency is defined by the
application, which establishes the values and relationships of database fields and
records.
database management system (DBMS). A product, such as NonStop SQL/MP or
Enscribe, that serves as the interface between a user or program (for example, a
Pathway server) and the database. Among its many functions, the DBMS controls
access to and organization of data within the database.
Data Definition Language (DDL). (1) The set of data definition statements within the
Structured Query Language (SQL). (2) A Tandem product for defining data objects in
Enscribe files and translating object definitions into source code.
data integrity. The condition of a database when its data values are accurate, valid, and
consistent according to rules established for changing the database. See also
database consistency.
DBCS. See double-byte character set (DBCS).
DDL. See Data Definition Language (DDL).
deadlock. (1) A situation in which two processes cannot proceed because each is waiting
for a reply from the other. (2) A situation in which two transactions cannot proceed
because each is waiting for the other to release a lock.
dedicated device. A term formerly used for a terminal or other input/output device
controlled by a configured TERM object, so that a Pathway application always ran on
that device without having to be started from PATHCOM with a RUN PROGRAM
command. (No new term replaces this term; instead, the manual text now refers to
such devices as those associated with configured TERM objects.) See
also nondedicated device and configured TERM object.
default value. The value that the system uses for a particular attribute or parameter when a
value has not been supplied by the user.