important system

Basic Processing Strategies

When an organization needs to use two or more computer systems, one of three basic processing strategies may be followed: centralized, decentralized, or distributed.
With centralized processing, all processing occurs in a single location or facility. This approach offers the highest degree of control. For example, centralized processing is useful for financial institutions that require a high degree of security.
With decentralized processing, processing devices are placed at various remote locations. The individual computer systems are isolated and do not communicate with each other. Decentralized systems are suitable for companies that have independent operating divisions. Some drug store chains, for example, operate each location as a completely separate entity; each store has its own computer system that works independently of the computers at other stores.
With distributed processing, computers are placed at remote locations but connected to eac...