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Oracle Database 12c The Complete Reference by Bob Bryla, Kevin Loney

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CHAPTER25Accessing Remote Data

As your databases grow in size and number, you will very likely need to share data among them. Sharing data requires a method of locating and accessing the data. In Oracle, remote data accesses such as queries and updates are enabled through the use of database links. As described in this chapter, database links allow users to treat a group of distributed databases as if they were a single, integrated database. In this chapter, you will also find information about direct connections to remote databases, such as those used in client-server applications.

Database Links

Database links tell Oracle how to get from one ...

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