Working with different types of data

The examples in this course are based on a data set about chocolate ratings (one of the most commonly consumed candies in the world).

This data set contains

The ratings table: information about chocolate bars: the origin of the beans, percentage of cocoa and the rating of each bar.
The voters table: details about the people who participate in the voting process. It contains personal information of a voter: first and last name, email address, gender, country, the first time they voted and the total number of votes.

In this exercise, you will take a look at different types of data.

1
Select information from the ratings table for the Belgian companies that received a rating higher than 3.5.
2
Query the voters table where birthdate is greater than '1990-01-01' and the total_votes is between 100 and 200.