To connect to and query a database from the client, you must provide code for these tasks:
Import packages.
Register the JDBC drivers.
Open a connection to a database.
Create a statement object.
Execute a query and return a result set object.
Process the result set.
Close the result set and statement objects.
Make changes to the database.
Commit changes.
Close the connection.
You must supply Oracle driver-specific information for the first three tasks, which allow your program to use the JDBC API to access a database.
For the other tasks, you can use standard JDBC Java code as you would for any Java application.
