Developer question about widget IDs

I wrote a widget (actually a shortcode). If several are added to a page, does Elementor assign unique IDs to each? If yes, then how can I get the unique ID for the widget in my code? Asking because I want my Editors to be able to drag multiple of my widgets onto the same page, and save different settings for each. I will create a custom table to record their settings, so I need to have the unique widgetID for the page. Similarly, when editors delete one of my widgets, which Elementor function is called, so I can tweak it to run code to delete the corresponding custom table entries? thanks…