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Basics of SQL databases
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Basics of SQL databases
🗄️
English
Intermediate
Simple and useful quiz to test basic knowledge of SQL databases.
Description
Databases
,
Computer
,
SQL
Tags
30
Questions
1 min
Per question
7:14
Average time
3.0
Contest Score
32
Participants
Start Quiz
1 comment
Hip Goose
Jun 3, 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.
Take the quiz to leave a comment
Option contains both 1.Primary key and 2.Unique key ;
my question is why only primary key is correct...
Waiting for some reasonable answer.