Overview IBM Mainframe
IBM
mainframes are
large computer systems produced by IBM from 1952 to the present. During the 1960s and 1970s,
the term mainframe computer was almost synonymous with IBM products due to their
market share. Current mainframes in IBM's line of business computers are developments of the
basic design of the IBM System/360.
Online Processing:
·
An online
system handles transactions when the occur and provides output directly to
users.
·
Because it
is interactive, online processing avoids delays and allows a constant dialog
between the user and the system.
·
The system
processes transactions completely when and where they occur. Users interact
directly with the information system.
·
Users can
accesss data randomly.
·
The information
system must be available whenever
necessary to support business functions.
Batch Processing:
·
Data is
processed in groups or batches.
·
Batch
processing is typically used for large amounts of data that must be processed
on a routine schedule, such as paychecks or credit card transactions.
·
A batch
processing system has several main characteristics: collect, group, and process
transactions periodically.
·
Batch
programs require no user involvement and requires significantly fewer network
resources than online systems
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