How many cards are there?
select count(*) from customers_cards
Who has the card 4560596484842? Show full name.
select t2.customer_first_name, t2.customer_last_name from customers_cards as t1 join customers as t2 on t1.customer_id = t2.customer_id where t1.card_number = "4560596484842"
Please also show his phone number.
select t2.customer_first_name, t2.customer_last_name, t2.customer_phone from customers_cards as t1 join customers as t2 on t1.customer_id = t2.customer_id where t1.card_number = "4560596484842"