"Direct Query" is the term that usually refers to a feature in Data Visualization. It fetches the real-time data from the underlying data source. The direct query option is useful when dealing with large datasets that are unable to import efficiently into the dashboard.
The direct query option does not create cache files and reads the data directly from the live data source. RubiSight Dashboard provides the function to enable/disable Direct Query at the dataset level. This option is applicable for that particular dashboard level and will work as set at other dashboard levels.