
SQL e chiavi esterne: dominiamo le anomalie!
Authored by Marco Buccione
Computers
12th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual è uno dei principali scopi delle chiavi esterne in SQL?
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Le chiavi esterne sono utilizzate per garantire l'integrità referenziale tra le tabelle?
Vero
Falso
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quale simbolo ti fa pensare alle chiavi esterne in SQL?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale tipo di anomalia si verifica quando si devono inserire più volte valori già presenti nella tabella?
Anomalia di inserimento
Anomalia di modifica
Anomalia di cancellazione
Anomalia di selezione
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual è uno dei modi per gestire un'anomalia di cancellazione?
Impostare la politica di reazione più appropriata
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