GLOSSARY - TM-5-6350-275-100217

TM 5-6350-275-10

GLOSSARY

TERM

DEFINITION

Field

An area on a form, used to enter a data element which defines a system parameter.

File

A set of related records held on disk and treated as a unit.

File Name

The name given to a file so that it can be uniquely identified.

Form

A display containing a number of pre-defined fields into which data entries are made.

Frame

A rectangular area within a display, in which system data is shown.

Graphic

A display containing a mixture of graphics and text showing items of plant in

diagrammatic form and/or timed archived data on a line graph or bar chart.

Group

A collection of up to 256 RADCs which are logically or geographically related.

Hard Disk

A storage medium for programs and records, so called because it is metal coated and

rigid.

Hardware

Any item of physical computer equipment.

Hash Code

A number preceded by the hash symbol (#), used to represent an item of system data.

Holder Record

A record held for every person permitted to enter security zones. The holder record

gives details of (at least) the holder's name, card number, PIN (if any), and the access

levels assigned to him or her. It may hold other details as required.

Housekeeping Alarms

Alarms used to give notice either that mail has been received or that alarm queues are

near to reaching capacity.

Housekeeping Stations

Stations which do not physically exist, but for which database records are maintained.

Housekeeping stations are used only to support pseudo points (that is, points whose

states and/or values are derived by a pseudo point process).

Intelligent Access Unit

A device located adjacent to a portal, controlling entry or exit for that portal.

Initialize

The automatic setting of indicators and processes before a program Is run. The term is

also used to describe the operation performed on hard or floppy disks before they are

used for storing data.

Invalidation

In the access control subsystem, to declare that a holder record is invalid and may no

longer be used to gain access. Invalidation is used when cards are lost or stolen, or are

subject to misuse. Once invalidated, a card's details remain on the system but cannot

be reused, deleted, or re-validated.

ISAM

Indexed Sequential Access Method. Refers to a BTOS facility allowing programmers to

access rapidly records held on file.

Land Line

The general term used to describe a dedicated communications bearer, such as a

private wire or optical fiber.

Glossary-5