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Sams Teach Yourself EJB in 21 Days by Krishna Kothapalli, Ragae Ghaly

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JDBC Architecture

JDBC is designed using a two-tier approach. It's a unified and standard API used by all J2EE applications and components to access databases through a provider-specific driver. Such clean separation of application logic and database-specific environment helps an enterprise application to be portable and reusable across multiple databases.

Note

JDBC is similar in concept to ODBC (Open Database Connectivity), a C-based standard to access databases. In fact, both JDBC and ODBC are interoperable; that is, both access each other through the JDBC-ODBC Bridge. JDBC provides enhanced services such as connection pooling, which will be covered later today.

Figure 9.1 illustrates the layered approach of the JDBC architecture. An application ...

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