TMF Glossary (G06.26+)

TMF Glossary

HP NonStop TMF Glossary—522415-003

Glossary-6

context-free server

context-free server. A server that does not retain any information about the processing of

previous requests. A context-free server accepts a single message from a requester,

performs the requested tasks, and issues a single reply to respond to the requester.

After the reply message is issued, the server retains no information, or context, that

can be used in subsequent requests. Pathway servers should be context-free. A

context-free server is analogous to a NonStop TUXEDO request/response server.

Subsystems provided by HP to run under the NonStop Kernel operating system are

context-free servers; therefore, management applications using the Subsystem

Programmatic Interface (SPI) to communicate with those subsystems must pass back

context information in continuation requests. See also Subsystem Programmatic

Interface (SPI).

data administrator. The person who specifies what data is needed by a business or

organization; the liaison between the business or organization user and the database

administrator.

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

consistency.

data volume. A disk volume configured to contain audited database files, and thus to

generate audit records to be placed in an audit trail. Data volumes are referred to as

DATAVOLS in TMFCOM command syntax. The system manager specifies which audit

trail is associated with each data volume and sets the recovery mode for the volume.