A national dashboard runs a heavy aggregation over 50 million records every time it is opened. The figures only need to be current to the previous night. What database feature fits?
Un tableau de bord national exécute une agrégation lourde sur 50 millions d'enregistrements à chaque ouverture. Les chiffres n'ont besoin d'être à jour qu'à la veille au soir. Quelle fonction de la base convient ?
Answers
AAn ordinary view, which recalculates the whole aggregation each time it is openedUne vue ordinaire, qui recalcule toute l'agrégation à chaque ouverture
BA trigger on every insertUn déclencheur sur chaque insertion
CA materialised view refreshed nightlyUne vue matérialisée rafraîchie chaque nuit
DA CHECK constraintUne contrainte CHECK
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