How to edit uploaded multiple file input partially?

Question

I want to edit already uploaded multiple files. I use jquery plugin to upload files.

1. I created a form and used jquery filer plugin to upload multiple files.
2. Added php code in backend to upload them to server and the urls into array saved in database.
3. I can preload the uploaded files to jquery filer with file option.
4. I can delete the uploaded file with ondelete option.

Now I want to delete some files add upload some files and then create a new array containing the new set of files to save in database.

I am a beginner. I don't have any ideas and I already searched whole of the internet.