If you have an application that uses JDBC or ODBC to access the database, then the following are the components that each of these applications uses:

* For an ODBC application: The application invokes the ODBC driver, then SQLRT, the DB Engine and finally accesses the database.

* For a JDBC application: The application invokes the JDBC driver, which calls the ODBC driver, SQLRT, the DB Engine, and finally accesses the database.