ajout de clause DELETE ON CASCADE

bdd.sql

@@ -27,8 +27,8 @@ CREATE TABLE robotise.cocktail (
 );
 
 CREATE TABLE robotise.composition (
-	id_cocktail INT REFERENCES cocktail(id_cocktail),
-	id_ingredient INT REFERENCES ingredient(id_ingredient),
+	id_cocktail INT REFERENCES cocktail(id_cocktail) ON DELETE CASCADE,
+	id_ingredient INT REFERENCES ingredient(id_ingredient) ON DELETE CASCADE,
 	quantite INT
 );