NonStop Server for Java Programmer's Reference (NSJ 4.0+)

E
Enscribe
HP database management software that provides a record-at-a-time interface between
servers and a database. As an integral part of the operating system distributed across two
or more processors, Enscribe helps ensure data integrity if a processor module, I/O
channel, or disk drive fails. Files on a NonStop system can be Enscribe files, SQL/MP
tables, or SQL/MX tables. Enscribe files can be either structured or unstructured.
exception
An event during program execution that prevents the program from continuing normally;
generally, an error. Java methods raise exceptions using the throw keyword and handle
exceptions using try, catch, and finally blocks.
Expand
The NonStop Kernel operating system network that extends the concept of fault tolerance
to networks of geographically distributed NonStop systems. If the network is properly
designed, communication paths are constantly available even if there is a single line
failure or component failure.
expandability
See scalability.
F
fault tolerance
The ability of a computer system to continue processing during and after a single fault
(the failure of a system component) without the loss of data or function.
G
garbage collection
The process that reclaims dynamically allocated storage during program execution. The
term usually refers to automatic periodic storage reclamation by the garbage collector
(part of the run-time system), as opposed to explicit code to free specific blocks of
memory.
graphical user interface (GUI)
Software that provides user control using a graphic display format. GUI software
provides a bit-mapped, icon-oriented, windowing, graphical environment.
Guardian
An environment available for interactive and programmatic use with the NonStop Kernel.
Processes that run in the Guardian environment use the Guardian system procedure calls