How do i get the list of all the collections which belongs to particular partner

I have created a table called Images where fields are id, name, partner_display_image, partner_primary image ----> both fields are media (image field).

But when i try to add new entry by post request. It doesnot even create columns with name partner_display_image, partner_primary image in mysql. Why this is so?

  1. I want to store the path to the images at their columns in database with partner_display_image, partner_primary image. like http://localhost:4005/public/images/thamnail_1595432254.png not only /upload/…

  2. i want the paths to be only store in table of db .

how can i do this. I have tried to use default upload api. but failed to customization in it.