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Handle (computing)
In
computer programming
, a
handle
is an abstract
reference
to a
resource
. Handles are used when
application software
references blocks of
memory
or objects managed by another system, such as a
database
or an
operating system
. Resource handles can be opaque
identifiers
, in which case they are often
integer
numbers, or they can be
pointer
s that allow access to further information. Common resource handles are
file descriptors
,
sockets
,
database connections
,
process identifiers
(PIDs), and
job IDs
.
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