Oracle
The product can integrate with Oracle databases through the Nintex K2 Oracle Service Broker. One can register a Service Instance of this broker to connect to a Oracle database, and then create SmartObjects that expose entities within the database as SmartObjects. These SmartObjects can in turn be consumed by SmartForms, workflows, reports and other SmartObject consumers.
There are no specific installation steps required to install this Service Broker, it is included and available by default in a Nintex Automation environment.