1.2. Relational Database Concepts

At the heart of all the Oracle products discussed in the previous section is the concept of using a database to store, manipulate, retrieve, and secure important business data. The manner in which these three tasks are performed has varied throughout the history of computing. Some early database technologies used flat files or hierarchical file structures to store application data. Others used networks of connections between sets of data to store and locate information.

Oracle 10g does not use any of these techniques for storing or accessing data. Instead, all releases of Oracle's database products have used a relational model to store application data in the database. This relational model on which Oracle is ...

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