Question 2,Recall the Beers database and some (approximate) table definitions from that database:create table Beers (name text primary key, brewer text );create table Drinkers (name text primary key, address text, phone text);create table Likes (drinker text references Drinkers (name),Which of the following queries (maybe more than one) answers the question "Which drinkers like every beer?"Note that there may be no drinkers that satisfy this property in the original instance of the database.(a) O(b) O(d) O(e) Oselect d.namefromwherebeer text references Beers (name),primary key (drinker, beer) );Drinkers dnot exists ((select L.beer as name from Likes L where L.drinker = d.name));select d.namefrom Drinkers dwhere);except(select name from Beers)not exists ((select name from Beers)except(select L.beer as name from Likes L where L.drinker = d.name)select d.namefromDrinkers dwhere (select count(*) from Beers)(select count (L.beer) from Likes L where L.drinker = d.name););select d.namefrom Drinkers dwhereexists ((select L.beer as name from Likes L where L.drinker = d.name)except(select name from Beers)None of above options is correct Question 1Consider the following table definitions:create table x ( id integer primary key, name text unique );create table y (id integer primary key, x_id integer references x(id), defn text );Which of the following SQL queries will return a list of names of x's and a count of the number of y tuples each is associated with?There may be more than one correct answer.(a) O(b) 0(c)(d) O(e) O(f) Oselect x.name, count (y.id)from x join y on (x.id = y.x_id)group by x. name;select x.name, count (y.id)from x left outer join y on (x.id = y.x_id)group by x.name;select x.name, count (y.id)from x right outer join y on (x.id = y.x_id)groupby x. name;select x.name,(select count(x_id) from y where y.x_id = x.id) as countfrom x full outer join y on (x.id = y.x_id);select distinct x.name,from(select count (x_id) from y where y.x_id = x.id) as countx full outer join y on (x.id = y.x_id);None of the above is correct

Question 1: The correct answer is option b. select x.name,count(y.id) from x left outer join y…

Answered: Question 2 Recall the Beers database…

Computer Networking: A Top-Down Approach (7th Edition)

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ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question 2 Recall the Beers database and some (approximate) table definitions from that database: create table Beers (name text primary key, brewer text); create table Drinkers (name text primary key, address text, phone text );