Table: Queue+-------------+---------+| Column Name | Type |+-------------+---------+| person_id | int || person_name | varchar || weight | int || turn | int |+-------------+---------+person_id column contains unique values.This table has the information about all people waiting for a bus.The person_id and turn columns will contain all numbers from 1 to n, where n is ..

Table: Tweets+----------------+---------+| Column Name | Type |+----------------+---------+| tweet_id | int || content | varchar |+----------------+---------+tweet_id is the primary key (column with unique values) for this table.content consists of alphanumeric characters, '!', or ' ' and no other special characters.This table contains all the tweets in a social media app...

Table: Views+---------------+---------+| Column Name | Type |+---------------+---------+| article_id | int || author_id | int || viewer_id | int || view_date | date |+---------------+---------+There is no primary key (column with unique values) for this table, the table may have duplicate rows.Each row of this table indicates that some viewer viewed an article ..

Table: Customers+-------------+---------+| Column Name | Type |+-------------+---------+| id | int || name | varchar |+-------------+---------+id is the primary key (column with unique values) for this table.Each row of this table indicates the ID and name of a customer. Table: Orders+-------------+------+| Column Name | Type |+-------------+------+| id | int || ..

Table: Products+-------------+---------+| Column Name | Type |+-------------+---------+| product_id | int || low_fats | enum || recyclable | enum |+-------------+---------+product_id is the primary key (column with unique values) for this table.low_fats is an ENUM (category) of type ('Y', 'N') where 'Y' means this product is low fat and 'N' means it is not.recyclable is an ENUM..

Table: World+-------------+---------+| Column Name | Type |+-------------+---------+| name | varchar || continent | varchar || area | int || population | int || gdp | bigint |+-------------+---------+name is the primary key (column with unique values) for this table.Each row of this table gives information about the name of a country, the continent to which i..