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A JDBC control makes it easy to access a relational database from your Java code using SQL commands.
The methods that you add to a JDBC control execute SQL commands against the database. You can send any SQL command to the database via the JDBC control, so that you can retrieve data, perform operations like inserts and updates, and even make structural changes to the database.
All JDBC controls are subclassed from the JdbcControl interface. The interface defines methods that JDBC control instances can call from an application.
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