Can we have a tv that saves Image in database ? A default dbImageTV type

Problem for expample:

In articles when we add images, we store it as a file. Once the article is deleted/purged, the image file still remains there as junk. Over time the junk size problem will be a huge problem.

Solution:

Can we store images in database?

http://www.phpro.org/tutorials/Storing-Images-in-MySQL-with-PHP.html

Another Solution:

A plugin on 'OnBeforeEmptyTrash' or 'OnEmptyTrash'