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| SQL> drop table departement;
Table supprimee.
SQL> create table departement (
Id number primary key,
Nom varchar2(10) not null,
DepAdm number references departement(id)
); 2 3 4 5
Table creee.
SQL> insert into departement values (1,'A',NULL);
1 ligne creee.
SQL> insert into departement values (2,'B',1);
1 ligne creee.
SQL> insert into departement values (3,'C',3);
1 ligne creee.
SQL> commit;
Validation effectuee.
SQL> insert into departement values (4,'D',7);
insert into departement values (4,'D',7)
*
ERREUR a la ligne 1 :
ORA-02291: violation de contrainte d'integrite (SKUATAMAD.SYS_C0073616) - cle parent
introuvable
SQL> select * from departement;
ID NOM DEPADM
---------- ---------- ----------
1 A
2 B 1
3 C 3
SQL> |
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