PART A (Writing some of the queries for HW 2 in SQL) Consider a database with the following schema. LIKES(drinker,beer); /* primary key(drinker,beer) */ FREQUENTS(drinker,pub); /* primary key(drinker,pub) */ SERVES(pub,beer,cost); /* primary key(pub,beer) */ Write the following queries in standard SQL, but without using aggregate operators. 1. Find pubs that serve some beer that Joe likes. 2. Find drinkers who frequent pubs where they can get a drink for less than $3 3. Find drinkers who like at least one expensive (over $8) beer that Joe likes. 4. Find drinkers who like some beers but do not frequent any pubs. 5. Find drinkers who frequent pubs that serve either Stella Artois or Molsons. 6.* Find pubs that serve every beer that Joe likes.