Technical data

Glossary of Oracle DBMS-Related Terms
access mode
In a database environment, that part of the COBOL data manipulation language
READY statement’s usage mode that describes what capabilities your run unit
will have with regard to records in the realm you have readied. The access mode
can be RETRIEVAL (read only) or UPDATE (read and write). See also usage
mode and allow mode.
allow mode
That part of the DML READY statement’s usage mode that describes what
you will allow other run units to do while your run unit works with storage
areas in the realms you have readied. The allow mode can be CONCURRENT,
PROTECTED, EXCLUSIVE, or BATCH. See also usage mode and access mode.
at end condition
A condition caused during FETCH or FIND statement execution for a database,
when no next logical record exists.
AUTOMATIC member
A database record that automatically becomes a member of a given set when the
record is stored in the database. AUTOMATIC set membership is declared in the
schema.
available mode
The state of a database record that allows its use by the Database Control
System (DBCS) in executing an operation requested by a given run unit. A record
is available if it is stored in a database area accessible to the DBCS, and the
intended use does not conflict with the processing requirements of concurrent run
units.
Bachman diagram
A graphic representation of the set relationships between owner and member
record types used to analyze and document a database design.
BATCH RETRIEVAL usage mode
The state of a realm which allows concurrent run units to update the realm while
the current run unit accesses a copy of the realm which was made at the point
when the READY was executed.
BATCH UPDATE usage mode
The state of a realm in which the current run unit may access or update any data
in the realm while allowing concurrent run units to retrieve from the realm but
preventing them from updating the realm. Effectively similar to PROTECTED
UPDATE.
Glossary–1