Which field in which table point to the urls of uploadfile in wp4.1?

The path such as "wp-content/uploads/2015/02/Screenshot_2015-02-25-20-59-31.png" point to the uploaded file in wp4.1 ,Which field in which table point to the urls of uploadfile in wp4.1?If i want to list all the uploaded files ,how to write the mysql commond "select which field from which table" ?

It is not the upload directory by default "wp-content/uploads".,but all the urls which point to the uploaded file in dadtabase.