Eduardo.
select * from customers where first_name = "Eduardo" and last_name = "Martins"
Of which company is Mr. Eduardo Martins a customer?
select company from customers where first_name = "Eduardo" and last_name = "Martins"
In which city is the company 'Woodstock Discos' located?
select city from customers where company = "Woodstock Discos"
What is the contact number of Mr. Eduardo Martins?
select phone from customers where first_name = "Eduardo" and last_name = "Martins"