105 lines
1.9 KiB
Plaintext
105 lines
1.9 KiB
Plaintext
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Q1)
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CREATE TABLE AUTEUR
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NumAuteur number primary key,
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NomAuteur Varchar(20)
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);
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Insert into AUTEUR
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VALUES
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(1,'wamster');
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Insert into AUTEUR
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VALUES
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(2,'Wiliatt');
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Insert into AUTEUR
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VALUES
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(3,'Schnur');
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Insert into AUTEUR
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VALUES
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(4,'JKwroling');
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Insert into AUTEUR
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VALUES
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(5,'Squeezie');
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Insert into AUTEUR
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VALUES
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(6,'Lov');
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Insert into AUTEUR
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VALUES
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(7,'Apolinaire');
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CREATE TABLE EDITEUR
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(CodeEditer number primary key,
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RaisonSociale Varchar(50)
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);
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Insert into EDITEUR
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VALUES (1,'FOU');
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Insert into EDITEUR
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VALUES (2,'RIEN');
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Insert into EDITEUR
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VALUES (3,'PERSONNE');
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Insert into EDITEUR
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VALUES (4,'INTELLIGENT');
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Insert into EDITEUR
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VALUES (5,'SKIZOFRIEND');
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2)
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----------------------------------------------
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RAPPEL:
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<nom_attribut> (type_attribut> REFERENCES <table_parente>
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(ON DELETE / ON UPDATE) (CASCADE / SET DEFAULT / SET NULL)
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----------------------------------------------
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CREATE TABLE LIVRE
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(NumLivre number primary key,
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Titre Varchar(60),
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CodeEditeur number references EDITEUR ON DELETE SET NULL
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);
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INSERT INTO LIVRE
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VALUES (1,'Harry Potter',4);
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INSERT INTO LIVRE
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VALUES (2,'Tournes la page',3);
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INSERT INTO LIVRE
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VALUES (3,'Roger et ses humains',3);
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INSERT INTO LIVRE
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VALUES (4,'devenir courreur pro en 10 conseils',1);
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INSERT INTO LIVRE
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VALUES (5,'geu',1);
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DELETE FROM EDITEUR WHERE RaisonSociale='PERSONNE';
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SELECT *
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FROM LIVRE;
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3)
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CREATE TABLE A_ECRIT
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(NumAuteur number references AUTEUR ON DELETE SET NULL,
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NumLivre number references LIVRE ON DELETE CASCADE,
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Primary key(NumAuteur,NumLivre)
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);
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INSERT INTO A_ECRIT
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VALUES (1,4);
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INSERT INTO A_ECRIT
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VALUES (2,5);
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INSERT INTO A_ECRIT
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VALUES (4,1);
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INSERT INTO A_ECRIT
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VALUES (5,2);
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INSERT INTO A_ECRIT
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VALUES (6,3);
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DELETE FROM Livre WHERE Titre='devenir courreur pro en 10 conseils';
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SELECT * FROM A_ECRIT;
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DELETE FROM AUTEUR WHERE NomAuteur='Lov';
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