
Quiz sul Linguaggio SQL
Quiz
•
Others
•
11th Grade
•
Practice Problem
•
Hard
Carola Rito
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Che cos'è SQL?
Un linguaggio di query per la gestione di basi di dati relazionali
Un linguaggio di programmazione per applicazioni web
Un sistema operativo per server
Un linguaggio di markup per pagine web
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quali sono le principali versioni di SQL?
SQL-1 e SQL-3
SQL-1 e SQL-2
SQL-3 e SQL-4
SQL-2 e SQL-3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cosa rappresenta il tipo di dato BOOLEAN in SQL?
Un valore vero o falso
Un valore di testo
Un valore temporale
Un valore numerico
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale comando SQL viene utilizzato per inserire nuovi dati in una tabella?
UPDATE
INSERT INTO
SELECT
DELETE
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale delle seguenti affermazioni è vera riguardo ai tipi di dato numerici esatti?
Possono rappresentare solo numeri interi
Possono rappresentare valori numerici esatti e decimali
Non possono essere utilizzati per valori monetari
Sono sempre di lunghezza fissa
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale operatore viene utilizzato per verificare l'uguaglianza in SQL?
!=
<>
=
>
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cosa fa il comando DELETE in SQL?
Seleziona dati da una tabella
Crea una nuova tabella
Modifica i dati esistenti
Cancella dati da una tabella
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