WebLogic Server 12c provides database connectivity through the use of the JDBC API.

JDBC API stands for Java database connectivity and allows Java applications to make calls to a database in the form of SQL statements. The connection to the database is encapsulated by the vendor's JDBC driver. WebLogic Server 12c provides JDBC drivers for the most commonly used databases, such as DB2, Informix, Microsoft SQL Server, MySQL, Oracle, PostgreSQL, Sybase, and others. A third-party JDBC driver can also be added, such as the Teradata JDBC drivers.

The JDBC data source contains the parameters, such as the database host address, database port, instance, and service name, needed to connect to the database. The data source also includes transaction options and a pool for reusing the database connections, optimizing the time spent opening these connections.

This chapter will go through some requirements of a hypothetic application named DBApp; it will show how to create and configure the JDBC...