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160-5-12 - Fonctions avancées des SGBD

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Les attributs possibles d'un rôle PostgreSQL incluent :

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Les index sur Materialized Views :

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Si un rôle est créé avec NOINHERIT, alors :

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Quels droits peut-on donner sur une table ?

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Le niveau SERIALIZABLE empêche :

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Quelle requête utilise un index B-tree sur col ?

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Cette séquence est valide :

BEGIN;

SAVEPOINT a;

INSERT INTO t VALUES (1);

ROLLBACK TO SAVEPOINT a;

COMMIT;

Que se passe-t-il ?

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Quels types d'index existent dans PostgreSQL ?

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Un index dense contient :

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Lorsque la page est pleine mais un tuple doit être inséré :

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