Save the detected face with ID

I want to develop a database of face image detected by camera. When camera detect a face, system will ask user to key in the person identity and save it in the database. Which means, my database consists of an image and ID. Or maybe it can contain a directory to where an image is save. It is an online enrolment. The data later on will be proceed for other purpose. So, I need a flexible database where I can update the data and call it back. But the thing is I don't know which medium is proper for me to use. I'd read about SQLite and CSV. But maybe there is other medium that can suits better. Any idea on how to achieve this?