Basics of SQL databases 🗄️

Simple and useful quiz to test basic knowledge of SQL databases.

Descrizione

Databases, Computer, SQL

Tag

Domande

1 min

Per domanda

7:14

Tempo medio

3,0

Punteggio contest

Partecipanti

Avvia quiz

1 commento

Hip Goose 3 Giu 2020

Q. What constraint should used for unique values.
Option contains both 1.Primary key and 2.Unique key ;
my question is why only primary key is correct...

Waiting for some reasonable answer.

Partecipa al quiz per lasciare un commento