11th Grade Constraints Quizzes, Questions & Answers

11th Grade

Top Trending Constraints Quizzes

This Unique Constraint Basics Quiz evaluates your understanding of database constraints that enforce data integrity. You'll explore how unique constraints prevent duplicate values, their role in relational databases, and how they...

Questions: 15 | Attempts: 10 | Last updated: May 2, 2026

Sample Question 1
What is the primary purpose of a unique constraint in a database?

To prevent duplicate values in a column

To automatically delete old records

To speed up query performance

To encrypt sensitive data

Sample Question 2
Which of the following is a key difference between a unique constraint and a primary key?

A unique constraint allows NULL values; a primary key does not

A primary key is always faster than a unique constraint

A unique constraint can only be applied to text columns

A primary key cannot be indexed

Sample Question 3
How many unique constraints can you define on a single table?

Only one per table

Maximum of two per table

Multiple unique constraints per table

Unlimited, but performance decreases

Recent Constraints Quizzes

Oracle Constraints By Blue Blaze

Explore the intricacies of Oracle constraints with the 'ORACLE CONSTRAINTS BY BLUE BLAZE' quiz. Assess your understanding of SQL constraints, including check constraints, transaction control commands, and more, enhancing database...

Questions: 20 | Attempts: 137 | Last updated: Mar 4, 2025

Sample Question
WHERE clauses allows alias names.

True

False