The diagram shows the flow of a basic program.  The basic flow is:
            
               - Create the Oracle Key Vault environment handle.
 
               - Optionally, configure trace.
 
               - Configure the connection.
 
               - Optionally, set up the Oracle Key Vault session.
 
               - Create the Oracle Key Vault function argument.
 
               - Execute the Oracle Key Vault function.
 
               - Interpret and free the Oracle Key Vault function result.
 
               - End the Oracle Key Vault session.
 
               - Free the Oracle Key Vault environment handle.