Delete a row via Power BI REST API

A very important question: In Power BI REST API I am able to insert and delete rows.

I want to user the delete function, but as I have seen, I am just able all the rows in table. Can I delete a specific row?

Is there a way to update a row in my datatable?

I wanted to develope such kind of live update of my datasets, and in my source new rows are inserted and existing rows are updated. So I have to find a way to update the rows in the dataset in Power BI Service. But deleting all rows in the table is not a solution because we have about half a million rows.