Editable table (ADP) how to delete few and modify few records on click of save button

Summary:

Hi Experts

I have a editable table in which a user can update, delete, add records to the table, at the end when user clicks on Save button then the details have to be synced to the backend in my case it is database table.

as the editable table data is stored in ADP variable which will have data modified from user. how to know what data got deleted? what approach i need to follow to achieve this use case? as few have to be deleted from backend and few may be to insert and few may be to update.