Kenneth C. Laudon,Jane P. Laudon Management Information System 12th Edition pdf

online transaction processing

, transac-

tions entered online are immediately processed by the computer.

Multitudinous changes to databases, reporting, and requests for information

occur each instant. 

Fault-tolerant computer systems 

contain redundant hardware, software,

and power supply components that create an environment that provides

continuous, uninterrupted service. Fault-tolerant computers use special soft-

ware routines or self-checking logic built into their circuitry to detect hardware

failures and automatically switch to a backup device. Parts from these comput-

ers can be removed and repaired without disruption to the computer system. 

Fault tolerance should be distinguished from