Consider the following relation schemas: singers $($sid: integer, age: integer, name: string, born$\_$in: string albums $($aid:integer, title:string, genre:string, release$\_$year:integer, tracks$\_$count:integer album$\_$singer $($aid: integer, sid: integer$)$ Write SQL queries to achieve the following requirements. $1.$ Find the singers featuring in the album 'Golden Memories'. $2.$ Find the name and the total number of tracks each singer has sung. The result should be sorted by the number of tracks in a descending order. $3.$ Find album title and the name of the singers who collaborated with Ariana Grande $($if any$).4.$ Find the singers who are strictly older than at least one singer featuring in the album 'Youthful Tunes'