I am doing a newsmigration to latest Contao 4.

Can anyone please explain how the image file is related to tl_news table ?
Currently for my migration I have imagepath and imagename for the respective image .

When I add an image to a news in contao through backend. The following fields get upated in database.
addImage => 1
singleSRC => f52a3871946211e782662e3e7a222c66
But when I search singleSRC in tl_files.uuid , it doesn't show any records.