create table tournois 
(
numero number(2,0) constraint pktournoi primary key,
alias1 char(5),
alias2 char(5),
res1 number(2,0),
res2 number(2,0)
);

insert into tournois values(1, 'Barak','Jones',5,4); 
insert into tournois values(2, 'Jones','Barak',7,3);
insert into tournois values(3, 'Jones','Musta',4,6);
insert into tournois values(4, 'Jones','Balir',5,5);
insert into tournois values(5, 'Barak','Musta',3,7);
insert into tournois values(6, 'Barak','Balir',5,5);
insert into tournois values(7, 'Barak','Simba',2,8);
insert into tournois values(8, 'Simba','Barak',7,3);
insert into tournois values(10, 'Simba','Balir',6,4);
commit;