drop database presidents;
create database presidents;
use presidents;




drop table if exists Presidents;



create table presidents (
	ID int primary key,
	name varChar(25),
	predecessorID int
	);
	insert into presidents values(44, "Obama", 43);
	insert into presidents values(43, "Bush, GW", 42);
	insert into presidents values(42, "Clinton", 41);
	insert into presidents values(41, "Bush, GHW", null);