A database has a full backup every Sunday, differential backups every night and transaction log backups every 15 minutes. After a failure on Wednesday at 11:00, which set is restored?
Une base de données a une sauvegarde complète chaque dimanche, des sauvegardes différentielles chaque nuit et des sauvegardes du journal des transactions toutes les 15 minutes. Après une panne le mercredi à 11 h, quel ensemble restaure-t-on ?
Answers
AEvery differential backup since Sunday, in order, with no full backup needed at allToutes les différentielles depuis dimanche, dans l'ordre, sans aucune sauvegarde complète
BOnly the most recent log backupUniquement la plus récente sauvegarde du journal
CSunday's full, Tuesday night's differential, then Wednesday's log backups in orderLa complète de dimanche, la différentielle de mardi soir, puis les sauvegardes du journal de mercredi dans l'ordre
DOnly Sunday's full backupUniquement la sauvegarde complète de dimanche
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