Where does file get uploaded when doing it through some web application ?

Question

in the database or somewhere else ?

Answer 1

All files are kept in the site's database for retrieval as needed and backed up regularly. If needed for page display, the scripting language used will retrieve it to be displayed according to site's html/css layout.

Ron

Answer 2

Most likely in file system on the web application server (company).

I don't know what you are referring to here exactly, but most of the file-sharing companies have gigantic file systems / storage just for files and I doubt anyone will use DB to store that kind of stuff.

If you are referring some forums (phpBB)...etc, they tend to store things in DB format

Hope this is helpful. Otherwise, give more details and will be glad to answer