Making the processing of the voice recognition a function of the hardware of the device, makes that aspect of the application asynchronous with the actual database query.

FORBES: Client vs. Server Architecture: Why Google Voice Search Is Also Much Faster Than Siri

You as a customer can use SQL and standard tools with Oracle applications, and the environment is secure (you can query, integrate, and backup the cloud at the database level, not the application level).

FORBES: Oracle Transformed - It's Now All about the Cloud