When a Dashboard page is loaded, each Widget makes a query to its Data Source as described in Alpana data model
Then, each time an interaction changes the query, a new query is make for the Widgets that need it.
For example : using filters or drill-down.
If you want to get new data in the Dashboard without having to interact, you can use the Reload button in the top bar of the Dashboard viewer :
This refreshes all widgets as if refreshing the browser page, except you keep the filter state.
If instead you want the Dashboard to refresh automatically, you have several options that developers can implement :