prince abdul malik , 31 , marries data analyst dayangku raabi'atul ` adawiyyah pengiran haji bolkiah , 22 , today .
malik is the youngest child of the sultan and wife , queen saleha , and is second in line to become the next sultan .
ceremony took place in the monarch 's lavish 1,788-room residential palace , istana nural iman in brunei 's capital .