
Diagrammi E-R (5): vari tipi di attributi
Authored by Marco Buccione
Computers
12th Grade
Used 2+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual è il tipo di attributo indicato con un ellisse tratteggiato?
Attributo composto
Attributo singolo
Attributo derivato
Attributo opzionale
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale attributo rappresenta una singola informazione per un'entità?
Attributo derivato
Attributo singolo
Attributo multiplo
Attributo composito
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cosa rappresenta la 'N' vicino all'ellisse per un attributo specifico?
Indica un attributo multiplo
Indica un attributo composito
Indica un attributo derivato
Indica un attributo singolo
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale tipo di attributo può essere ottenuto da altri attributi attraverso una formula o un processo?
Attributo composito
Attributo singolo
Attributo derivato
Attributo opzionale
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Per ogni entità, cosa viene definito come un insieme minimo di attributi che identifica un'istanza dell'entità in modo univoco?
Attributo singolo
Attributo derivato
Attributo opzionale
Attributo chiave
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual è il tipo di attributo composto da sottogruppi che rappresentano parti più piccole delle informazioni?
Attributo opzionale
Attributo derivato
Attributo composto
Attributo chiave
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