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Chapter 24. Replication Made Easy > Uses of Replication

Uses of Replication

Data replication is the ability of a system to automatically make copies of its data and application objects in remote locations. Any changes to the original or to the copies are propagated to all other copies. Data replication allows users to make changes to data offline at remote locations. Changes to either the original or the remote data are synchronized with other instances of the database.

To see an example of data replication at work, say you have a team of salespeople who are out on the road all day. At the end of the day, each salesperson logs on to one of the company's Windows NT servers through DUN (Dial-Up Networking) or RAS (Remote Access Services). Each salesperson's transactions are sent to the server. If necessary, any changes to the server data are also sent to the salesperson. In addition to data being replicated, if the developers in the organization are busily adding forms, reports, and modules to the database's master copy, any changes to the application components are also updated in the remote copies as users log on to the system.


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