In a spreadsheet-style table, a supplier's phone number is repeated on 400 order rows. When it changes, a clerk updates only some rows, and reports now show two different numbers. What is this problem called, and what prevents it?
Dans une table de type tableur, le numéro de téléphone d'un fournisseur est répété sur 400 lignes de commandes. Quand il change, un agent ne met à jour que certaines lignes, et les rapports affichent désormais deux numéros différents. Comment appelle-t-on ce problème, et qu'est-ce qui l'évite ?
Answers
AA deadlock, prevented by adding more memory and processor cores to the database serverUn interblocage, évité en ajoutant de la mémoire et des cœurs au serveur de base de données
BAn update anomaly, prevented by normalising supplier details into one tableUne anomalie de mise à jour, évitée en normalisant les données du fournisseur dans une seule table
CA backup failure, prevented by RAIDUn échec de sauvegarde, évité par le RAID
DA syntax error, prevented by a better keyboardUne erreur de syntaxe, évitée par un meilleur clavier
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